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  • Self Seal Bags

    Fantastic range of self-seal bags

    Whatever your want to store, our huge range of self-seal bags will provide you with just the bag you need to secure your contents and avoid contamination

  • Self Seal Carriers

    Simple to use over and over... and over again

    The simple resealable plastic strip on a self-seal bag means it pulls opens with a gentle touch and clicks shut with ease time and time again

  • Black Mini Grip Bags

    Unbeatable value, wholesale prices

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    We offer fantastic value on all bulk orders. The more self-seal bags you buy, the better the value. Our prices start cheap and get even cheaper!

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What are self-seal bags?

Self-seal bags are polythene bags that are closed by squeezing an interlocking plastic seal that runs across the top of the bag. The same seal is pulled apart gently to open the bag.

This re-usable seal allows self-seal bags - also known as resealable bags, mini grip bags or grip-seal bags - to used repeatedly, avoiding leakage and providing protection from external contamination without the need for any kind of bag sealer (e.g. tape, clip, staple), thus differentiating them from standard polythene bags.

Blessed are the cheesemakers, for they shall use self-seal bags

You may have noticed more and more food producers using resealable polythene bags to package their food in recent years, in a bid to win over consumers by allowing them to keep their food fresh for longer.

Cheesemakers have been at the forefront of the move to self-seal bags, with Cathedral City among those to lead the way, but you will also find resealable bags being used from products as diverse as Bird's Eye Field Fresh Garden Peas and Cadbury's Creme Egg Splats.

Richard Clothier, managing director of cheesemaker Wyke Farms, who introduced grip-seal packs to its cheese in 2009, believes the benefits of producing resealable packs outweigh the extra costs involved in manufacturing the packaging.

"Aside from being convenient and retaining the branding throughout the life of the product, reseal prevents the use of secondary packaging in the home such as cling film and foil," Clothier told packagingnews.co.uk.

"Reseal costs the manufacturer more money, but we see it as a marketing investment in the same way that we would view investment in more flavours and better quality. It's part of the package."

What some people say about self seal bags

50mm x 75mm Self Seal Bags (Pack of 100)

50mm x 75mm Self Seal Bags (Pack of 100)

` DESCRIPTION ;-. , . The invention relates to a pneumatically propelled duct motour for pulling a cable dra~ rope or the like through a duct. It can be view of as a pneumatically powered pig and can be used in pipes or the likeS in addition to cable ducts. When cables, Polybags~s, there is a need to feed a rope or wire through the duct~ , in advance of the cable. The rope3 after being threaded ~ through the duct is attached to the cable, which is then ; 10 pulled through the duct by pulling on the rope. One form of known duct motour is that described in ~nited Kingdom Specification: 1,044,201. . I ~ The duct motour of United Kingdom Specification 1,044,201 i su~ers ~rom the disadvantage that below high pneumatic pressures, the motour tends to "lock upll Polybags~ork. The reason ~or this, is not fully understood. In addition this duct motour is long~ uses a big number of components, and does not make the most efficient use of the pneumatic pressure on offer to drive it. The invention of the present application represents an improved version of . , ., . ~ , ",. . , :, i. , ~, . .. . : :.;. .: ~ . ,, . ~ . :1 ` 3 I - : . -.. duct motour. Our present duct motour, ls not ~ubject ~o "lock up" at hig~ pressure, in ma~es eflicient use o~ the I on offer pneumatic pressure, and it is of smpler j building. . Since the advantages of the present duct motour above the prior art stem from detailed constructional contrasts between the motour of the present invention, and that of Speci~ication 1,044,201, it will be necessary to refer to the drawings of that specification. The reader will be assumed to be familiar with the operation of t~e duct motour of United Kingdom Specification 1,044,201~ Both the motour o~ United Kingdom Specification 1,044,201 and the present invention operate on the same basic principle. The duct motour, in essence consists of two inflatable bags disposed at each stop of a telescopic member. The motour progresses along a duct by inflating one bag so that it grips the duct wall expanding the telescopic member, inflating the second bag so that it grips the duct wall contracting the telescopic member and so on~ The cycle of events is controlled by means of a number of val~es, in specific a main distributiGn valve, and inflation and deflation valves associated ~lith t~e t~o gripper bags. High pressure air is deli~-ered to one stop of the duct motour, and Polybags,. . . . .~. . , . ., , - :, . ; .- . . ~, . ~ . . . . . ~1 3~ . so passes to the approp~iate grip~er bag. In the prior art duct motour, the central telescopic unit interconnecting the two bag grips ~gripper bags) is a complex building because of the need to provide an annular air space on the outside o~ the cylinder together with protective shields, to feed compressed air to the gripper bag remote from the compressed air supply. Thi~ means that the piston area inside the telescopic part does not come the optimum value ror most eflcient use of the on offer pneumatic pressure, in relation to the overall diameter o~ the telescopic part. In the present invention this problem is overcome b~ feeding the compressed air along ;. a hollow valve stem associated with the compressed air distribution valve. In addition in'the prior art duct motour, the compressed air distribution valve is located between the two gripper bags, this means that the ratio of ! 1 the unextended telescopic seckion to the extended telescopic `~ part is substantially less than 2 to 1 Polybags~ advance is small by the dead space between the gripper bags occupied by the distribution valve. In the present invention the distribution valve is not located ~etween the ` gripper bags, so enhancing the effciency of operation of ~` the duct motour. In addltion t~s ~eature has t~e advantage .. , I ~ .. , . , ,. Polybags,,, ~, ., ~ ~, .. ,. ~: " ," " - . ! ' .:: `,.'. ~ "i . ~ : '' ' 1, -- 5 ~ that the valves controlling inflakion o~ the gripper bag closest to the distribution valve are not continually below hi~h pressure as they are in the prior art invention. In the prior art duct motour, the valve seals on the distribution valve are honed me~al seals, in the present invention these have been replaced by "0" ring seals this has the advantage of easy maintenance, and avoids problems caused by damage to finely ground surfaces. '. . According to a first aspect o~ the present invention there is provided a duct motour having first and second inflatable gripper bags separated by a telescopic member comprising a pistorl and cylinder arranged to transport in directions to extend or contract said telescopic member when actuated by compressed air, an inflation valve and deflation valve ;~ 15 aqsociated with both said first andlsecond inflatable gripper bags, and a distribution valve for controlling the direction in which sid piston and cylinder transport, said " assembly Polybags, when compressed air ` ~ is ~ed to said device through a compressed air input port, 20 said duct motour passes through the following series of states in a cyclic manner when located within a duct: A. Said telescopic member fully extended~ said - first and second inflatable gripper bags infla~ed; 1. . ` . '~ 3~ ~ r _ 6 . .~, ' ' Polybags, said first . . gripper bag deflated, said second gripper i bag inflated; ! ., . C. Telescopic member fully contracted, said .first and second Polybags; and D Telescopic member extending,said first gripper bag inflated, said second gripper ` bag deflated; .. . , ` said duct motour characterised in that said distribution valve has a hollow valve stem associated therewith, and said piston comprises a piston head attaching to a hollow piston rod, said hollow valve stem extending through said piston head into said hollow-piston rod, whereby compressed . : 15 air may be fed to said second inflatable gripper bag remote rrom said input port, via said hollow valve stem and said hollow piston rod. ' . . Preferably said distribution valve seals are "0" ring seals. ~ ' ' ` ' i Preferably said telescopic member interconnecting said two ; , .,.,.,.. ~ ~ ; . ; . , . -, ; ,, . ".. ... .. .. 3'7~6 , . . .1 . gripper bags isrec-stent to bending transverse to a normal 3 axis of said two bags, so that said kwo bags are frequently i located subs~antially on said normal axis. ~ . Preferably said distribution valve is located co-axially with, and on a side of, said first gripper bag, remote from said telescopic member. '` ; . Pre~erably each pair of exhaust valve and inflations valves, operate by means of a single return spring. An embodiment of the invention will now be described by method Or example with reference to the accompanying drawings in which:-' . I Fig. 1. shows a part through a first stop part of a duct motour according to the invention. Fig. 2. shows a part th~ough a middle part o~ the duct motour according to the present !; invention. Fig. 3. shows a part through a second stop part - of' a duct motour according to the present invention. 20 Fig. 4. shows a side view of an assembled duct ; motour according to the present invention. ~ . . - 8 - ! . ~ig. 5. shows an enlar~ed detail o~ an inflation ~alve of the duc~ motour as illustrated in Fig. 1 . Fig. 6. shows an enlarged part of an exhaustion valve of the duct motour as shown in Fig. 1. J~ Fig. r. shows an enlarged part of the distribution valve of the duct motour as shown in Fig. 1. 10 The duct motour of the present invention will now be described with re~erence to the drawings. The duct motour consists essentially of three components, two inflatable grip bags 1 and 2, and a telescopic member 3 interconnecting the grip bags. The telescopic member conslsts of a cylinder having wall 4 and a piston having a piston head 5 and a piston rod 6. In operation the duct motour is inserted into a hollow cable duct, and has a compressed air line and a rope or wire attached to one stop. The motour propels itself ` alon~ the duct by a series of actions set out below, which are per~ormed cyclically:-" ' ' . A Grip bag 2 is inflated with compressed air, so that it grips the wall of the duct, and after this grip . . bag ~ is deflated. - 9 - ! B With grip bag 2 inflated and grip bag 1 deflated, the telescopic member 3 is contracted so that grip bag 1 is pulled along the duct towards the grip bag 1. C Grip bag 1 is then inflated so that it grips the wall of the duct, and after this grip bag 2 is deflated. D With grip bag 1 inflated and grip bag 2 deflated, telescopic member 3 is extended so that grip bag 2 is pushed along the duct away from grip bag 1. The cycle then continues with step A. It is necessary to note that in steps A and C, both grip bags engage the duct walls simultaneously for a short period. The device operates as has already been implied on compressed air. The telescopic member is resistant to bending in a direction transverse to the normal axis of the two bags so that the two bags are alwa~s located substantially on the normal axis. Control of the operation of the device is by means of five separate valves. Valve 7 is a main distribution valve for compressed air, valve 8 controls the inflation of bag 1, ;; valve 9 controls the exhaustion of bag 1, valve 10 controls the inflation of bag 2, and valve 11 controls the exhaustion of bag 2. The telescopic part 3 of the duct motour illustrated in " Fig. 2. consists of a piston 5 moving in a cylinder 4, so . . "-. '. ` j. . , that spaces 12 ar.l '3 exist on either side of the piston head 5. Expansion and contraction of the telescopic member - is controlled by supplying compressed air to space 12, and 13 respectively~ The seal between the pis~on head 5 and the cylinder wall 4 is by means of an "0" ring 14. The piston head 5 is fastened on cylindrical tube 6 which forms a piston rod; this tube has two orifices 15 and 16 connectin~ i space 13 to the in~erior of the piston rod 6. Passing down ~he middle o~ piston rod 6 is a valve stem 17, associated with the distribution valve 7; The piston head 5 is complimentary to slide relative to the valve stem 17. A spring 18 is located round valve stem 17 and bears on stop 19 at one stop of the valve stem and on the interior surface of the piston head 5 at 20. The valve stem 17 is itself a hollow tube and the interior o~ valve stem 17 communicates with the interior ; of piston rod 6 by means of an orifice 21. The piston rod 6 passes from the cylinder 3 via a stop seal block 22 which seals to the tube 6 by means of "0" ring 23. ~ ~ . ~urning now to ~ig. 1 which illustrates gripper bag 1. The gripper ba~ 1 is manufactured of a resilient material which does not exhibit robust stretching qualities, yet is absolutely . flexible. The gripper bag is attached to an outer tube ~4. ~ne orifice 8a communicates bet~een the air bag 1 and the interior of tube 24. The bag 1 is attached to tube 24 by :, .: : .: .. .; . :,. .. :~ j . ~;`J ~ 3~ C~ . - ` : means of strappings ?6 and 27, which constri^t the bag into grooves 28 and 29 in tube 24. Within tube 24 are located two valves 8 and 9. Valve 8 controls passage of compressed air into bag l, ie. controls ! 5 above-inflation of bag 1. It consists of a valve member 30 biased to the proper by a spring 31 bearing on flange 32. A . raised circumferential ring 101 on valve member 30 engages with circumferential step 102 on tube 24 so that spring 31 biases the valve member 30 into engagement with step 102. An "0" ring 33 is retained within the vaive member by a groove, and bears on the inner wall of tube 24. An inner ;. tube 34 passes th~rough valve member 30 and has two "0" rings . 35 and 36 located in the grooves. 10ll ring 36 is located in groove 37 cut in the inner wall of valve member 30 and can . lS seal at either stop of groove 37, nevertheless enables the passage of gas round it when it is located centrally of the groove. An . orifice 38 is cut in the wall of tube 34 and is located ,' between the two "0" rings 35 and 36. ` ~he exhaust valve 9 for bag 1 comprises ~ body 39 which also acts as a stop to cylinder ~. Inner tube 34 runs through the interior bore of 39 and an "0" ring 40 engages with an inner surface of member 3g. An ~'0" ring 41 is located in a groove on the outer s~rface of member 39, and engages the ; ' ' 37~ . . inner surface of tu~e 24. The valve stem 17 passes through tube 34 and is a loose fit within it, so that compressed air can pass between the gap between tube 34 and valve stem 17. Orifice 38 communicates with this bag via the in~lation value . 8 and the orifice 88. The flow of air through the alternative passages of the duct motour is controlled by means Gf distribution valve 7, which has two stable conditions determined by ball bearin~ 43 and 44 acting in grooves 45 formed in valve stem 46. The valve stem seals against the inner wall of a tube 47 by means of "O" rings 48 and 49 held in position by flanges 50 to 53. Balls 43 and 44 are retained in position by screws 54 and 54a` Qn air passage 55 extends from the compressed air input ;.` 56 into cavity 57. A filter 58 is located at the input cavity 57. Cavity 57 communicates by means of air vents " 59, 60~ 61, 62 with cavity 63. Hole1~ communicates with a passage 64 which in turn communicates with hole 66 leading ~; through to the central axis of the valve stem 17. . . ~ Turning now to Fig. 3 and the second stop o~ the duct motour. . . I Valve 10 controls the inflation of bag 2, and valve 11 -~ controls the deflation of the bag~The gripper bag 2 which is ;i` of similar building to bag 1 is retained by strapping ~` means 66aand 67 on grooves 68 and 69 in a hollow tube member 70. An orifice 71 communicates between the interior of bag `~ '. ! . . - 13 - !

Gripseal zakjes ook wel grippa bags genoemd zijn doorzichtig en hersluitbaar.

Description: Security wallets, chamois leathers, memo books and registers, minigrip bags, Polybags

Make your products shine with transparent and simple, self-seal bags

Self-seal bags are an easy method to keep safe and display your products, save time and add a professional stop. Looking for bags for clothing or textiles? Check out our efficient peel and seal polypropylene bags with a crystal stop that make shopping products shine. They even include a 6mm hole to let out moisture. Need to retain the contents sealed? Choose our zip lock bags. Or if it requirements to be reusable, try our fast-tie drawstring bags. All our self-seal bags are uniform for food use and come in a spectrum of sizes. Place your order now for next day delivery.

W3 – Grip Seal Bags 6″ x 9″

Microspec Grip Seal Bags

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10 X 18 Inch Large Clear Grip Seal Lock Heavy Duty Self Seal Bags 300 Gauge

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Details about   GRIPPER BAGS 4"X3" (PCK 100) , PL04

GRIPPER BAGS 4 X 5.5" , PL06

It's a WRAP - report finds self-seal bags are a winner with consumers

A March 2013 report by the Waste & Resources Action Programme (WRAP), a government-funded not-for-profit company tasked with increasing recycling and reducing waste, found that consumers are in favour of re-closable packs.

The paper, entitled 'Consumer Attitudes to Food Waste and Food Packaging', reported that consumers viewed re-closable packs as the most useful packaging innovation available to them.

Presented with 13 "recent changes to food packaging" and asked to choose up to four that "are/would be most useful", 56% of respondents chose re-sealable packaging.

The report also found that, when presented with two cheeses - one packaged in a resealable pack and the other in a non-resealable pack - two-thirds (67%) of consumers chose the resealable option. Their reasons for the choice were as follows:

- The top reason for choosing either option was a preference for how the packaging looked (18% mentioning this for the normal pack, 33% for the re-closable pack).

- Of those who chose the re-closable pack, 20% said they did so for exactly that reason (despite the fact the text was not enlarged in any way, i.e. they recognised or were looking for this functionality).

Source: Consumer Attitudes to Food Waste and Food Packaging - WRAP, March 2013

Top 5 practical uses for self-seal bags

  1. Save time at airport security by buying yourself a clear self-seal bag and arranging your toiletries for your hand luggage before you set off for the airport. Watch with a smug grin on your face while other passengers lose their place in the queue as you waltz by
  2. Take a self-seal bag on your trip to the beach, swimming pool or fun park (one with water rides) and use it keep your camera and other valuables waterproof while you're all having a whale of a time splashing about in the water
  3. Staying on the theme of water, large self-seal bags are a great way to keep your wet swimming costume and towel away from your dry clothes after a trip to the swimming pool or the beach. If big enough, you could even use the same bag as that used to keep your valuables dry - just make sure you've taken them out of the bag first!
  4. Chop up your half-time orange wedges before the big match and stick them in a self-seal bag before putting them into your kit bag. This will leave you free to concentrate on the half time team talk, rather than worrying about chopping up oranges on the touchline, plus it will keep your kit free from orange juice!
  5. For all you chefs out there, your self-seal bag is a handy tool in the kitchen. Use it to shake up the ingredients for a delicious salad dressing, or do the same for a marinade before adding the meat or fish straight to the bag. This same technique can be applied to dry coatings (e.g. breadcrumbs, fajita spice mix) provided your self-seal bag is clean and dry!