CN2561718Y - Plastic film opening closing bag with composite structure - Google Patents
Plastic film opening closing bag with composite structure Download PDFInfo
- Publication number
- CN2561718Y CN2561718Y CN 02272792 CN02272792U CN2561718Y CN 2561718 Y CN2561718 Y CN 2561718Y CN 02272792 CN02272792 CN 02272792 CN 02272792 U CN02272792 U CN 02272792U CN 2561718 Y CN2561718 Y CN 2561718Y
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- CN
- China
- Prior art keywords
- bag
- density polyethylene
- plastic film
- composite structure
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A plastic thin film zipper bag with a composite structure comprises a bag body made of high-density polyethylene material and is characterized in that a strip-shaped low-density polyethylene composite layer is provided at the edge position of the opening of the bag body, and the edge of a zipper made of low-density polyethylene is connected with the strip-shaped low-density polyethylene composite layer at the opening edge of the bag body by thermal-compress adhesion. Compared with plastic thin film zipper bag with composition structure made of single or full-composite material, the utility model has the significant advantages that the manufacture cost can be reduced greatly under the premise of not influencing the quality and the normal use of the zipper bag.
Description
Technical field
The utility model relates to the polymer mouth-locking bag, especially a kind of plastic film mouth-locking bag of composite structure.
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 in order to ensure plastic bag quality partly, all adopts high density polyethylene (HDPE) usually, its cost is higher.
Summary of the invention
The purpose of this utility model is the defective at above-mentioned mouth-locking bag cost of manufacture height, and a kind of plastic film mouth-locking bag of composite structure is provided, and this structure mouth-locking bag is intended to guarantee under the prerequisite of mouth-locking bag quality and use, reduces the manufacturing cost of mouth-locking bag.
The plastic film mouth-locking bag of composite structure of the present utility model, 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 the plastic film mouth-locking bag of the utility model composite structure is: the edge of opening position along bag is provided with strip low density polyethylene (LDPE) composite bed.
The principle of design of the plastic film mouth-locking bag of the utility model composite structure 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 open end low melting material 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.
The plastic film mouth-locking bag of composite structure of the present utility model is compared with the plastic film mouth-locking bag that single high-density polyethylene material is made, 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 the plastic film mouth-locking bag of composite structure of the present utility model is provided in detail by the following drawings and embodiment.
Description of drawings
Fig. 1 is the structural representation of the plastic film mouth-locking bag of composite structure;
Fig. 2 is the plastic film mouth-locking bag A-A directional profile structure enlarged diagram of composite structure shown in Figure 1.
The specific embodiment
Embodiment: can be clear that from Fig. 1, the plastic film mouth-locking bag of composite structure 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.
Described bag 1 can adopt part co-extrusion two-layer process to make, and the melt body temperature of high-density polyethylene material is: 135 ℃, the melt body temperature of low-density polyethylene material is: 80 ℃; The molten sticking temperature of hot pressing is: 80～135 ℃.
Claims (3)
1, a kind of plastic film mouth-locking bag of composite structure, 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, the plastic film mouth-locking bag of composite structure according to claim 1 is characterized in that: the edge of opening position along bag is provided with strip low density polyethylene (LDPE) composite bed.
3, the plastic film mouth-locking bag of composite structure according to claim 1 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 ℃; The molten sticking temperature of hot pressing is: 80～135 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02272792 CN2561718Y (en) | 2002-08-23 | 2002-08-23 | Plastic film opening closing bag with composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02272792 CN2561718Y (en) | 2002-08-23 | 2002-08-23 | Plastic film opening closing bag with composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561718Y true CN2561718Y (en) | 2003-07-23 |
Family
ID=33737419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02272792 Expired - Lifetime CN2561718Y (en) | 2002-08-23 | 2002-08-23 | Plastic film opening closing bag with composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561718Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374355C (en) * | 2002-08-23 | 2008-03-12 | 覃通衡 | Plastic film mouth-locking bag and its making method |
-
2002
- 2002-08-23 CN CN 02272792 patent/CN2561718Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374355C (en) * | 2002-08-23 | 2008-03-12 | 覃通衡 | Plastic film mouth-locking bag and its making method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080312 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |