CN100374355C - Plastic film mouth-locking bag and its making method - Google Patents
Plastic film mouth-locking bag and its making method Download PDFInfo
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- CN100374355C CN100374355C CNB021346194A CN02134619A CN100374355C CN 100374355 C CN100374355 C CN 100374355C CN B021346194 A CNB021346194 A CN B021346194A CN 02134619 A CN02134619 A CN 02134619A CN 100374355 C CN100374355 C CN 100374355C
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- density polyethylene
- plastic film
- ldpe
- low density
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Abstract
The present invention relates to a plastic film preliminary shaft bag and a manufacture method thereof. A film bag with composite layer bag body is manufactured by a coextrusion double-layer technology. The main material of the bag body is used as high-density polyethylene, and a low-density polyethylene layer is compounded outside the high-density polyethylene. The margin of a zipper made from low-density polyethylene material is connected to a low-density polyethylene composite layer of the margin of a bag opening in a hot pressing bonding mode into a whole, and the plastic film preliminary shaft bag is manufactured. Compared with a plastic film preliminary shaft bag made from single high-density polyethylene material, the plastic film preliminary shaft bag manufactured by the manufacture method has the greatest advantage that the manufacture cost is greatly reduced under the precondition of no influence on the quality of the preliminary shaft bag and the effect of normally using.
Description
Technical field
What the present invention relates to is the polymer packaging bag, especially a kind of plastic film mouth-locking bag and manufacture method thereof.
Technical background
At present, a lot of commodity all adopt plastic film mouth-locking bag to pack on the market, plastic film mouth-locking bag is made up of bag and the slide fastener that is arranged on sack, usually slide fastener is made of spill limit that is arranged on the sack edge and the convex limit that is arranged on sack corresponding sides edge, but the described spill limit that is arranged on sack two edges and convex limit mutually scarf close.The mouth-locking bag of existing this structure has two kinds of manufacture methods usually, and a kind of is with plastic material monolithic molding of the same race.The another kind of same material that adopts, make bag film and fore shaft slide fastener respectively after, again both are carried out hot melt adhesive.This shows that existing mouth-locking bag can only adopt same material for realizing being connected of its bag and slide fastener, as all adopting high density polyethylene (HDPE) usually, its cost is higher.
Summary of the invention
The objective of the invention is the defective at above-mentioned mouth-locking bag cost of manufacture height, a kind of plastic film mouth-locking bag and manufacture method thereof are provided, this method is intended to guarantee under the prerequisite of mouth-locking bag quality and use, reduces the manufacturing cost of mouth-locking bag.
Plastic film mouth-locking bag of the present invention, comprise: the bag made from high-density polyethylene material, it is characterized in that: the bag surface is provided with the low density polyethylene (LDPE) composite bed, and the edge of the slide fastener made from low density polyethylene (LDPE) is connected on the low density polyethylene (LDPE) composite bed of bag edge of opening in hot pressing adhesion mode.
Another feature of plastic film mouth-locking bag of the present invention is: the edge of opening position of described bag is provided with strip low density polyethylene (LDPE) composite bed.
The manufacture method of plastic film mouth-locking bag of the present invention is characterized in that:
One, adopt the co-extrusion two-layer process to make the bag that a kind of bag film surface has composite bed, the main material of bag is a high density polyethylene (HDPE), and being compounded in its outer strip layer is low density polyethylene (LDPE);
Two, make slide fastener with low-density polyethylene material by traditional handicraft;
Three, then the edge of slide fastener is attached on the low density polyethylene (LDPE) composite bed of bag edge of opening, executing what one is enough to make the molten sticking temperature of bag film cladding material to heat, low density polyethylene (LDPE) slide fastener and the adhesion of bag open end low density polyethylene (LDPE) composite bed are integral, promptly make fore shaft plastic film bag product.
Another key character of plastic film mouth-locking bag manufacture method of the present invention is: described bag adopts the part coextrusion process to make the bag that a kind of bag film surface opening edge has a composite bed.
The principle of design of plastic film mouth-locking bag of the present invention and manufacture method thereof is: the characteristic of utilizing different melt body temperature materials, the material of two kinds of different melt body temperatures is made the bag of part composite structure, the slide fastener that a kind of low melting material is made is attached on the bag strip composite bed then, and apply a temperature that can make low melt body temperature material layer fusing, the bag that is heated the position can take place: low melt body temperature material layer fusing, it is molten sticking that the low melt body temperature material layer of the bag film that is in contact with it is taken place, and molten sticking phenomenon can not take place in that same temperature is next between the high melt body temperature thin layer.
Plastic film mouth-locking bag of the present invention is compared with the plastic film mouth-locking bag that single high-density polyethylene material is made, and its biggest advantage is: under the preceding topic that does not influence mouth-locking bag quality and normal result of use, greatly reduce manufacturing cost.
The concrete structure of plastic film mouth-locking bag of the present invention and manufacture method are provided in detail by the following drawings and embodiment.
Description of drawings
Fig. 1 is the structural representation of plastic film mouth-locking bag;
Fig. 2 is a plastic film mouth-locking bag A-A directional profile structure for amplifying scheme drawing shown in Figure 1.
The specific embodiment
Embodiment: can be clear that from Fig. 1, plastic film mouth-locking bag is formed by the bag made from high-density polyethylene material 1 with the slide fastener 2 that low density polyethylene (LDPE) is made, the edge of opening position of described bag 1 is provided with strip low density polyethylene (LDPE) composite bed 3 (see figure 2)s, slide fastener 2 edges are attached to outside the low density polyethylene (LDPE) composite bed 3 of bag 1, in hot pressing adhesion mode slide fastener 2 are fixedly connected on the open end of bag 1 then.
The method for making of above-mentioned plastic film mouth-locking bag:
One, adopt part co-extrusion two-layer process to make the bag 1 that a kind of bag film edge of opening has compound strip layer, the main material of bag 1 is a high density polyethylene (HDPE), bag 1 open outer side is a strip low density polyethylene (LDPE) composite bed 3, the melt body temperature of described high-density polyethylene material is: 135 ℃, the melt body temperature of low-density polyethylene material is: 80 ℃;
Two, make slide fastener 2 with low-density polyethylene material by traditional handicraft, the melt body temperature of low-density polyethylene material is: 80 ℃;
Three, then the edge of low-density polyethylene material slide fastener 2 is attached on the strip low density polyethylene (LDPE) composite bed 3 of bag 1 edge of opening, executing what one is enough to make bag 1 cladding material to melt sticking 80～135 ℃ of heating of temperature, low density polyethylene (LDPE) slide fastener 2 and 3 adhesions of bag 1 outer strip low density polyethylene (LDPE) composite bed are integral, promptly make fore shaft plastic film bag product.
Claims (4)
1. plastic film mouth-locking bag, comprise: the bag made from high-density polyethylene material, it is characterized in that: the bag surface is provided with the low density polyethylene (LDPE) composite bed, and the edge of the slide fastener made from low density polyethylene (LDPE) is connected on the low density polyethylene (LDPE) composite bed of bag edge of opening in hot pressing adhesion mode.
2. plastic film mouth-locking bag according to claim 1 is characterized in that: described low density polyethylene (LDPE) composite bed is arranged on the edge of opening position of described bag with strip.
3. the manufacture method of a plastic film mouth-locking bag is characterized in that:
One, adopt the co-extrusion two-layer process to make the bag film bag that a kind of surface has composite bed, the main material of bag is a high density polyethylene (HDPE), and being compounded in its outer strip layer is low density polyethylene (LDPE);
Two, make slide fastener with low-density polyethylene material by traditional handicraft;
Three, then the edge of slide fastener is attached on the low density polyethylene (LDPE) composite bed of bag edge of opening, granting one is enough to make the molten sticking temperature of bag film cladding material to heat, low density polyethylene (LDPE) slide fastener and the adhesion of bag open end low density polyethylene (LDPE) composite bed are integral, promptly make fore shaft plastic film bag product.
4. according to the manufacture method of the described plastic film mouth-locking bag of claim 3, it is characterized in that: the melt body temperature of high-density polyethylene material is: 135 ℃, the melt body temperature of low-density polyethylene material is: 80 ℃; Adding the sticking temperature of hot melt is: 80～135 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021346194A CN100374355C (en) | 2002-08-23 | 2002-08-23 | Plastic film mouth-locking bag and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021346194A CN100374355C (en) | 2002-08-23 | 2002-08-23 | Plastic film mouth-locking bag and its making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1400148A CN1400148A (en) | 2003-03-05 |
| CN100374355C true CN100374355C (en) | 2008-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021346194A Expired - Fee Related CN100374355C (en) | 2002-08-23 | 2002-08-23 | Plastic film mouth-locking bag and its making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100374355C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233689B (en) * | 2011-07-11 | 2012-11-21 | 钟健常 | Method applied in adding sealing reinforcement strips in process of manufacturing organ zipper bag |
| CN105015934A (en) * | 2015-07-07 | 2015-11-04 | 张少康 | Environment-friendly inflating air cushion for packaging and manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5796949A (en) * | 1980-11-22 | 1982-06-16 | Nihon Matai Co Ltd | Bag made of double layer polyethylene film |
| US4576844A (en) * | 1983-11-28 | 1986-03-18 | C-I-L Inc. | Shipping bag |
| CN1077691A (en) * | 1991-05-23 | 1993-10-27 | 斯坦迪派克私人有限公司 | Bag is stored and provided to lubricating oil |
| US5265961A (en) * | 1991-09-13 | 1993-11-30 | Mobil Oil Corporation | Plastic grocery bag having draw-tape closure and flat bottom |
| US5930877A (en) * | 1996-05-22 | 1999-08-03 | Illinois Tool Works Inc. | Peel seal zipper tape |
| CN1230146A (en) * | 1997-02-06 | 1999-09-29 | 克里奥瓦克公司 | High strength flexible film package |
| CN1274668A (en) * | 2000-06-22 | 2000-11-29 | 覃通衡 | Easy-to-open plastic bag |
| CN2561718Y (en) * | 2002-08-23 | 2003-07-23 | 覃通衡 | Plastic film opening closing bag with composite structure |
-
2002
- 2002-08-23 CN CNB021346194A patent/CN100374355C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5796949A (en) * | 1980-11-22 | 1982-06-16 | Nihon Matai Co Ltd | Bag made of double layer polyethylene film |
| US4576844A (en) * | 1983-11-28 | 1986-03-18 | C-I-L Inc. | Shipping bag |
| CN1077691A (en) * | 1991-05-23 | 1993-10-27 | 斯坦迪派克私人有限公司 | Bag is stored and provided to lubricating oil |
| US5265961A (en) * | 1991-09-13 | 1993-11-30 | Mobil Oil Corporation | Plastic grocery bag having draw-tape closure and flat bottom |
| US5930877A (en) * | 1996-05-22 | 1999-08-03 | Illinois Tool Works Inc. | Peel seal zipper tape |
| CN1230146A (en) * | 1997-02-06 | 1999-09-29 | 克里奥瓦克公司 | High strength flexible film package |
| CN1274668A (en) * | 2000-06-22 | 2000-11-29 | 覃通衡 | Easy-to-open plastic bag |
| CN2561718Y (en) * | 2002-08-23 | 2003-07-23 | 覃通衡 | Plastic film opening closing bag with composite structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1400148A (en) | 2003-03-05 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JUNYANG PLASTIC CO., LTD., HUIZHOU CITY Free format text: FORMER OWNER: TAN TONGHENG Effective date: 20101227 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518055 GAOLI PLASTIC CO., LTD., NO.8, LONGMA INDUSTRIAL AREA, SHIYAN TOWN, SHENZHEN CITY, GUANGDONG PROVINCE TO: 516006 INDUSTRIAL PARK, HUIHUAN TOWN, HUIZHOU CITY, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20101227 Address after: 516006 Hui Hui town industrial zone, Guangdong, Huizhou Patentee after: Huizhou Chun Yang Plastic Co., Ltd. Address before: 518055 Guangdong city of Shenzhen province Longma Shiyan Town Industrial Zone No. eight colliers Plastics Co. Ltd. Patentee before: Qin Tongheng |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20160823 |