CN2154236Y - Multi-layer pearlite film for soft packing of liquid - Google Patents
Multi-layer pearlite film for soft packing of liquid Download PDFInfo
- Publication number
- CN2154236Y CN2154236Y CN 93201660 CN93201660U CN2154236Y CN 2154236 Y CN2154236 Y CN 2154236Y CN 93201660 CN93201660 CN 93201660 CN 93201660 U CN93201660 U CN 93201660U CN 2154236 Y CN2154236 Y CN 2154236Y
- Authority
- CN
- China
- Prior art keywords
- density polyethylene
- layer
- film
- ldpe
- liquid
- 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.)
- Ceased
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to a plastic film structure for packing, which is a double-layer structure comprising a skin layer (1) and an inner layer (2). The skin layer is a low-density polyethylene pearlite body, and the inner layer is high density polyethylene. The utility model can be manufactured by the coextrusion blow moulding technology. The utility model combines characteristics of two kinds of materials. Under the condition of same strength of a single layer low-density polyethylene, the thickness can be reduced by 25%, and the skin layer can also present the pearly lustre.
Description
The utility model relates to a kind of structure of plastic film for wrapping.
Liquid soft package has obtained general application, as milk in bags, packed soy sauce etc.Used liquid soft package material is all single layer milky low-density polyethylene film at present.Because low-density polyethylene film gloss is relatively poor, thereby apparent effect is undesirable.In addition, the low density polyethylene (LDPE) tear strength is lower, thereby must use thicker film just can reach requirement of strength, improves the additive of apparent effect if add other in low density polyethylene (LDPE), and consumption must be bigger.
The purpose of this utility model is to propose the structure of a kind of later-model liquid soft package with plastic sheeting, can obtain apparent effect preferably with less additive.
This liquid soft package is a kind of film like structures with multilayer nacreous film, comprises the double-decker on internal layer and top layer, and internal layer is a high density polyethylene (HDPE), and the top layer is the low density polyethylene (LDPE) pearlitic matrix.
This multilayer nacreous film is owing to the high density polyethylene (HDPE) intensity height of internal layer, and the thickness of film can be thinner, and the low density polyethylene (LDPE) on top layer is a pearlitic matrix, is mixed with a certain proportion of pearlescent material, presents noble pearly-lustre color, and apparent mass greatly improves.Because only need to add pearlescent material in the top layer, the consumption that adds material is less again.
Accompanying drawing is the constructional drawing of this liquid soft package with multilayer nacreous film.
1 is the top layer among the figure, is the low density polyethylene (LDPE) pearlitic matrix, and 2 is internal layer, is high-density polyethylene layer.
This multilayer nacreous film can adopt the technology of double-layer coextrusion blowing to make, and namely utilizes Article two, feed worm uses respectively high density and low density polyethylene (LDPE), becomes tubular film behind the blow mold coextrusion blow, wherein mixes a certain proportion of pearly-lustre master batch in the low density polyethylene (LDPE) raw material.
This multilayer nacreous film can also be made three-decker, and the top layer is the low density polyethylene (LDPE) pearlite, and middle level and internal layer are high density polyethylene (HDPE). Can make of three-layer co-extruded blow molding process.
Embodiment: adopt the double-deck blowing unit of IFM 1100-I, the internal layer high density polyethylene (HDPE), THICKNESS CONTROL is at 0.04mm ± 10%, the top layer adopts low density polyethylene (LDPE) to add the pearly-lustre master batch, the multilayer nacreous film thickness that THICKNESS CONTROL is made at 0.02mm ± 10% is 0.06mm, reduces by 25% than individual layer low density polyethylene (LDPE) liquid soft package film thickness commonly used.Intensity is identical with the individual layer low density polyethylene (LDPE), and apparent mass is greatly improved.
Claims (2)
1, the multilayer nacreous film used of a kind of liquid soft package is a kind of film like structures, it is characterized in that this film is the double-decker that comprises top layer (1) and internal layer (2), and the top layer is the low density polyethylene (LDPE) pearlitic matrix, and internal layer is high density polyethylene (HDPE) (2).
2, the multilayer nacreous film of liquid soft package as claimed in claim 1 is characterized in that described film is a three-decker, and the top layer is the low density polyethylene (LDPE) pearlitic matrix, and middle level and internal layer are high density polyethylene (HDPE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93201660 CN2154236Y (en) | 1993-01-20 | 1993-01-20 | Multi-layer pearlite film for soft packing of liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93201660 CN2154236Y (en) | 1993-01-20 | 1993-01-20 | Multi-layer pearlite film for soft packing of liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2154236Y true CN2154236Y (en) | 1994-01-26 |
Family
ID=33786073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93201660 Ceased CN2154236Y (en) | 1993-01-20 | 1993-01-20 | Multi-layer pearlite film for soft packing of liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2154236Y (en) |
-
1993
- 1993-01-20 CN CN 93201660 patent/CN2154236Y/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 19981124 Decision number of declaring invalidation: 1172 |