CN110901169A - Preparation method of high-barrier anti-expansion packaging bag - Google Patents
Preparation method of high-barrier anti-expansion packaging bag Download PDFInfo
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- CN110901169A CN110901169A CN201811117797.8A CN201811117797A CN110901169A CN 110901169 A CN110901169 A CN 110901169A CN 201811117797 A CN201811117797 A CN 201811117797A CN 110901169 A CN110901169 A CN 110901169A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B70/20—Cutting sheets or blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a preparation method of a high-barrier anti-expansion packaging bag, which comprises the steps of inner bag manufacturing, outer bag manufacturing and inner and outer bag sewing. The invention is automatic, and can manufacture the packaging bag with excellent barrier property and expansion resistance.
Description
Technical Field
The invention relates to a preparation method of a packaging bag, in particular to a preparation method of a high-barrier anti-expansion packaging bag.
Background
The packing bag is also called as flexible container, and is one kind of flexible transport and packing container widely used in transporting and packing powdered, granular and lumpy food, grain, medicine, chemical, mineral product, etc.
Most of the existing packaging bags have the problems of poor barrier property, insufficient anti-expansion capability and the like, the preparation process is simple, and the manufactured packaging bags cannot meet the high-requirement use occasions.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects in the prior art and provide an automatic preparation method for manufacturing a packaging bag with excellent barrier property and expansion resistance.
The technical scheme is as follows: in order to solve the technical problems, the invention provides a preparation method of a high-barrier anti-expansion packaging bag, which comprises the following steps,
firstly, manufacturing an inner bag:
(1) blowing LLDPE/LDPE, PET and TPU into a PET film by a three-layer co-extrusion film blowing machine, controlling the temperature between 150 ℃ and 170 ℃, controlling the host frequency between 25 Hz and 35Hz and the traction frequency between 8 Hz and 10Hz, respectively compounding the PET film on two surfaces of an aluminum foil by a compounding machine by using an adhesive, and cutting the compounded aluminum foil into sheets;
(2) blowing LDPE, TiV and PA into a five-layer co-extruded PA film by a five-layer co-extrusion film blowing machine, controlling the temperature of the five-layer co-extruded PA film to be between 150 ℃ and 170 ℃, controlling the host frequency to be between 25 and 35Hz and the traction frequency to be between 8 and 10Hz, and then cutting the five-layer co-extruded PA film into film strips with the width of 5cm and the same length as a reticular spacer;
(3) melting and extruding PP particles at the melting temperature of 140-150 ℃, cooling to form a sheet film, stamping the sheet film by a die to form a net-shaped structure, heating and stretching the sheet film by a drying room at the heating temperature of 230-260 ℃, cooling and rolling to form a net-shaped material with low elongation and high strength, and finally cutting the net-shaped material into net-shaped spacers;
(4) and (3) melting the PA film and the reticular spacers by a hot-press forming machine, wherein the corresponding stacking sequence is as follows: PA film/reticular spacer/PA film, wherein the hot melting temperature is controlled between 130 ℃ and 150 ℃, the hot pressing time is controlled between 6 s and 10s, and the pressure is controlled between 6 Kg and 7 Kg;
(5) and (3) hot-melting the semi-finished product of the reticular spacer and an aluminum film through a hot-press forming machine to form a formed reticular spacer inner bag, wherein the final forming stacking sequence is as follows: nine layers of aluminum films/PA films/net spacers/PA films to finally form a high-barrier expansion-prevention net spacer inner bag;
secondly, manufacturing an outer bag:
(1) drawing: sucking the raw material particles by an automatic sucking device of a wire drawing machine, and stirring; the uniformly stirred raw materials are melted and extruded by a wire drawing machine to form a sheet film, the hot melting temperature is between 220 ℃ and 260 ℃, and the pressure is between 8 Kg and 9 Kg; cooling the sheet film by a water tank, wherein the temperature of cooling water is between 40 and 60 ℃; cutting the cooled film sheet by a cutter row to form monofilaments; the monofilament is stretched by an oven and a traction roller, the temperature of the oven is between 140 ℃ and 150 ℃, the drafting multiple of the traction roller is controlled between 4 and 8 times, and the speed is fast at the back and slow at the front;
(2) circular weaving: the processed monofilament is crossed and woven by a circular weaving machine to form woven cloth, the warp density is 12-13 pieces/5 cm, and the weft density is 12-13 pieces/5 cm;
(3) coating: coating the woven cloth with a durable antistatic master batch with a melt index of 25-30 in the process of coating a resin film;
(4) cutting: cutting the sheet material after the film coating treatment, folding the edge of the sheet material by using an automatic cutting machine, fixing by using ultrasonic waves, and reserving a seam on the sheet material, wherein the size of the seam is 2-2.5 cm;
(5) and (3) sewing: sewing the sheet material by a sewing machine to form an outer bag;
thirdly, sewing the inner bag and the outer bag:
and sewing the treated high-barrier expansion-prevention mesh-shaped spacer inner bag and outer bag into a packaging bag.
Table for nine layers of high barrier films:
table for five-layer co-extruded PA films:
has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the invention has the advantages of high efficiency, low cost and the like, and meets the actual production requirements.
Detailed Description
The present invention will be further described with reference to the following examples.
Example (b):
the invention relates to a preparation method of a high-barrier anti-expansion packaging bag, which comprises the following steps,
firstly, manufacturing an inner bag:
(1) blowing LLDPE/LDPE, PET and TPU into a PET film by a three-layer co-extrusion film blowing machine, controlling the temperature between 150 ℃ and 170 ℃, controlling the host frequency between 25 Hz and 35Hz and the traction frequency between 8 Hz and 10Hz, respectively compounding the PET film on two surfaces of an aluminum foil by a compounding machine by using an adhesive, and cutting the compounded aluminum foil into sheets;
(2) blowing LDPE, TiV and PA into a five-layer co-extruded PA film by a five-layer co-extrusion film blowing machine, controlling the temperature of the five-layer co-extruded PA film to be between 150 ℃ and 170 ℃, controlling the host frequency to be between 25 and 35Hz and the traction frequency to be between 8 and 10Hz, and then cutting the five-layer co-extruded PA film into film strips with the width of 5cm and the same length as a reticular spacer;
(3) melting and extruding PP particles at the melting temperature of 140-150 ℃, cooling to form a sheet film, stamping the sheet film by a die to form a net-shaped structure, heating and stretching the sheet film by a drying room at the heating temperature of 230-260 ℃, cooling and rolling to form a net-shaped material with low elongation and high strength, and finally cutting the net-shaped material into net-shaped spacers;
(4) and (3) melting the PA film and the reticular spacers by a hot-press forming machine, wherein the corresponding stacking sequence is as follows: PA film/reticular spacer/PA film, wherein the hot melting temperature is controlled between 130 ℃ and 150 ℃, the hot pressing time is controlled between 6 s and 10s, and the pressure is controlled between 6 Kg and 7 Kg;
(5) and (3) hot-melting the semi-finished product of the reticular spacer and an aluminum film through a hot-press forming machine to form a formed reticular spacer inner bag, wherein the final forming stacking sequence is as follows: nine layers of aluminum films/PA films/net spacers/PA films to finally form a high-barrier expansion-prevention net spacer inner bag;
secondly, manufacturing an outer bag:
(1) drawing: sucking the raw material particles by an automatic sucking device of a wire drawing machine, and stirring; the uniformly stirred raw materials are melted and extruded by a wire drawing machine to form a sheet film, the hot melting temperature is between 220 ℃ and 260 ℃, and the pressure is between 8 Kg and 9 Kg; cooling the sheet film by a water tank, wherein the temperature of cooling water is between 40 and 60 ℃; cutting the cooled film sheet by a cutter row to form monofilaments; the monofilament is stretched by an oven and a traction roller, the temperature of the oven is between 140 ℃ and 150 ℃, the drafting multiple of the traction roller is controlled between 4 and 8 times, and the speed is fast at the back and slow at the front;
(2) circular weaving: the processed monofilament is crossed and woven by a circular weaving machine to form woven cloth, the warp density is 12-13 pieces/5 cm, and the weft density is 12-13 pieces/5 cm;
(3) coating: coating the woven cloth with a durable antistatic master batch with a melt index of 25-30 in the process of coating a resin film;
(4) cutting: cutting the sheet material after the film coating treatment, folding the edge of the sheet material by using an automatic cutting machine, fixing by using ultrasonic waves, and reserving a seam on the sheet material, wherein the size of the seam is 2-2.5 cm;
(5) and (3) sewing: sewing the sheet material by a sewing machine to form an outer bag;
thirdly, sewing the inner bag and the outer bag:
and sewing the treated high-barrier expansion-prevention mesh-shaped spacer inner bag and outer bag into a packaging bag.
The invention has the advantages of high efficiency, low cost and the like, and meets the actual production requirements.
The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.
Claims (1)
1. A preparation method of a high-barrier anti-expansion packaging bag is characterized by comprising the following steps: which comprises the following steps of,
firstly, manufacturing an inner bag:
(1) blowing LLDPE/LDPE, PET and TPU into a PET film by a three-layer co-extrusion film blowing machine, controlling the temperature between 150 ℃ and 170 ℃, controlling the host frequency between 25 Hz and 35Hz and the traction frequency between 8 Hz and 10Hz, respectively compounding the PET film on two surfaces of an aluminum foil by a compounding machine by using an adhesive, and cutting the compounded aluminum foil into sheets;
(2) blowing LDPE, TiV and PA into a five-layer co-extruded PA film by a five-layer co-extrusion film blowing machine, controlling the temperature of the five-layer co-extruded PA film to be between 150 ℃ and 170 ℃, controlling the host frequency to be between 25 and 35Hz and the traction frequency to be between 8 and 10Hz, and then cutting the five-layer co-extruded PA film into film strips with the width of 5cm and the same length as a reticular spacer;
(3) melting and extruding PP particles at the melting temperature of 140-150 ℃, cooling to form a sheet film, stamping the sheet film by a die to form a net-shaped structure, heating and stretching the sheet film by a drying room at the heating temperature of 230-260 ℃, cooling and rolling to form a net-shaped material with low elongation and high strength, and finally cutting the net-shaped material into net-shaped spacers;
(4) and (3) melting the PA film and the reticular spacers by a hot-press forming machine, wherein the corresponding stacking sequence is as follows: PA film/reticular spacer/PA film, wherein the hot melting temperature is controlled between 130 ℃ and 150 ℃, the hot pressing time is controlled between 6 s and 10s, and the pressure is controlled between 6 Kg and 7 Kg;
(5) and (3) hot-melting the semi-finished product of the reticular spacer and an aluminum film through a hot-press forming machine to form a formed reticular spacer inner bag, wherein the final forming stacking sequence is as follows: nine layers of aluminum films/PA films/net spacers/PA films to finally form a high-barrier expansion-prevention net spacer inner bag;
secondly, manufacturing an outer bag:
(1) drawing: sucking the raw material particles by an automatic sucking device of a wire drawing machine, and stirring; the uniformly stirred raw materials are melted and extruded by a wire drawing machine to form a sheet film, the hot melting temperature is between 220 ℃ and 260 ℃, and the pressure is between 8 Kg and 9 Kg; cooling the sheet film by a water tank, wherein the temperature of cooling water is between 40 and 60 ℃; cutting the cooled film sheet by a cutter row to form monofilaments; the monofilament is stretched by an oven and a traction roller, the temperature of the oven is between 140 ℃ and 150 ℃, the drafting multiple of the traction roller is controlled between 4 and 8 times, and the speed is fast at the back and slow at the front;
(2) circular weaving: the processed monofilament is crossed and woven by a circular weaving machine to form woven cloth, the warp density is 12-13 pieces/5 cm, and the weft density is 12-13 pieces/5 cm;
(3) coating: coating the woven cloth with a durable antistatic master batch with a melt index of 25-30 in the process of coating a resin film;
(4) cutting: cutting the woven cloth after the coating treatment, folding the edge of the woven cloth by using an automatic cutting machine, fixing the edge by using ultrasonic waves, and reserving a seam on the woven cloth, wherein the size of the seam is 2-2.5 cm;
(5) and (3) sewing: sewing the woven cloth by a sewing machine to form an outer bag;
thirdly, sewing the inner bag and the outer bag:
and sewing the treated high-barrier expansion-prevention mesh-shaped spacer inner bag and outer bag into a packaging bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117797.8A CN110901169A (en) | 2018-09-14 | 2018-09-14 | Preparation method of high-barrier anti-expansion packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117797.8A CN110901169A (en) | 2018-09-14 | 2018-09-14 | Preparation method of high-barrier anti-expansion packaging bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110901169A true CN110901169A (en) | 2020-03-24 |
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ID=69813054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811117797.8A Withdrawn CN110901169A (en) | 2018-09-14 | 2018-09-14 | Preparation method of high-barrier anti-expansion packaging bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110901169A (en) |
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2018
- 2018-09-14 CN CN201811117797.8A patent/CN110901169A/en not_active Withdrawn
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