CN105196578A - Shrinkage sheet and manufacturing method thereof - Google Patents
Shrinkage sheet and manufacturing method thereof Download PDFInfo
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- CN105196578A CN105196578A CN201510697336.2A CN201510697336A CN105196578A CN 105196578 A CN105196578 A CN 105196578A CN 201510697336 A CN201510697336 A CN 201510697336A CN 105196578 A CN105196578 A CN 105196578A
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- sheet material
- polystyrene resin
- polystyrene
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Abstract
The invention relates to the technical field of polystyrene sheets, in particular to a shrinkage sheet and a manufacturing method thereof. The shrinkage sheet is prepared from polystyrene resin and high impact polystyrene resin, and is characterized in that the polystyrene resin accounts for 99 percent, and the high impact polystyrene resin accounts for 1 percent. Compared with the prior art, the fracture possibility of a biaxial tension polystyrene sheet produced by the production is reduced during punching; because local heating, preheating before transverse stretching, turning up after heat shrinkage are added, the warp quantum ratio is reduced by about 35 percent, and the additional value of a product can be increased.
Description
Technical field
The present invention relates to polystyrene sheet material technical field, specifically a kind of contraction sheet material and manufacture method thereof.
Background technology
At present, general biaxially oriented polystyrene (BOPS) sheet material, after longitudinal direction, cross directional stretch, by customer requirement, divides the rouleau being cut to different in width to sell.Downstream client with rouleau BOPS sheet material for raw material, hot-forming through forming machine.There is external condition to restrict (heating, compressed air malleation are blown again) time shaping, generally all can fit on the die cavity of mould well, produce the goods such as the box consistent with die cavity, lid, collet.These goods are used for the packaging aspect of food, medicine, hardware, toy etc.
In recent years, along with BOPS sheet material output constantly expands, its range of application is also more and more wider, little by little from packaging for foodstuff, Key works Drug packing, industrial goods packaging field, to amusement, intelligence development education direction (heat shrink) expansion.This mainly make use of it and heats the feature that after-contraction speed is fast, shrinkage rates is large.But general sheet material, the shape of product made after contraction is irregular, and the outline shape before cannot remaining retracted, does not reach designing requirement, cannot realize the effect of novelty, amusement.So general sheet material cannot adapt to the requirement of shrinking processing.Therefore, need to research and develop a kind of novel heat shrink sheet material.
Summary of the invention
The present invention is for overcoming the deficiencies in the prior art, and by increasing auxiliary equipment, adjustment processing technology, improves laterally, longitudinal thermal stress, adjustment thermal contraction ratio, overcome to turn over after common sheet material shrinks stick up, the defect of distortion.
For achieving the above object, design is a kind of shrinks sheet material, and comprise polystyrene resin, high-impact polystyrene resin, it is characterized in that: described polystyrene resin is 99%, described high-impact polystyrene resin is 1%.
Shrink a manufacture method for sheet material, adopt following processing step to be prepared from:
(1) reinforced, the raw material that polystyrene resin and high-impact polystyrene resin form is added raw material feed bin, enters the little hopper above extruder by vavuum pump suction;
(2) metering and loading materials, by technological requirement, adjust the rotating speed of the blanking motor of little hopper, the blanking ratio of little hopper is made to reach polystyrene resin: high-impact polystyrene resin=99:1, the raw material added in setting ratio is first conducted oneself with dignity and is dropped into mixed-hopper, then flows to vertical screw, and raw material is in the vertical cavity of vertical screw, while stir, entered extruder by vertical screw force feed;
(3) melt extrude, the raw material mixed in proportion enters in extruder, after melting, exhaust, homogenizing, net filtration after filtration, enters Melt Pump, resin further homogenizing in Melt Pump of molten condition, then flow in T-shaped die head, at die lips place, extrude in the form of sheets;
(4) salivate, melt quenching on salivation roller of sheet, forms solid-state substrate;
(5) longitudinal stretching, substrate, in longitudinal stretching machine, through preheating, stretching, type-approval process, has carried out longitudinal stretching, and substrate is longitudinally being stretched 2-4 doubly, and its thickness reduces 2-4 doubly;
(6) local heat, the sheet material cross section thickness after longitudinal stretching is the distribution of ridge shape, and draw exit to install two heaters additional vertical, heating-up temperature is 80 ~ 140 DEG C, each 200mm width in baking substrate both sides, and edge temperature adds tensility after improving;
(7) preheating, needs before cross directional stretch to carry out constant temperature preheating, and increase by one section of preheating device at horizontal mouth of drawing in, preheat temperature is 80 ~ 140 DEG C, provides the sufficient degree of preheating;
(8) cross directional stretch, under the traction that the substrate after longitudinal stretching presss from both sides at chain, enters transverse drawing mill, at cross directional stretch to original 3-5 doubly, reaches default width and thickness, form polystyrene sheet material;
(9) draw, polystyrene sheet material is sent to Traction Station and draws;
(10) trimming, cropped by the webbing of chain folder clamping by polystyrene sheet material, the polystyrene sheet material clout cropped carries out online rim charge pulverizing, and wind delivers to mixed-hopper, then enters metering and loading materials circulation and carries out repeating processing;
(11) on-line measurement thickness, carries out on-line continuous thickness measure by the polystyrene sheet material after trimming, and the thickness of measurement is shown to independently on terminal display, reference when adjusting for operator;
(12) semi-finished product rolling, the polystyrene sheet material rolling on winder measuring thickness is semi-finished product;
(13) cut and pack, semi-finished product polystyrene sheet material, on cutting machine, is cut by customer requirement, is recoiled as finished product, packaging, warehouse-in after inspection.
Compared with the existing technology, the biaxially oriented polystyrene sheet material using the method to produce, decreases the possibility of pressure break time die-cut in the present invention; Owing to adding local heat, horizontally drawing front preheating, turn over after thermal contraction stick up, the ratio of twist angle reduces about 35%, can improve value-added content of product.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
The present invention is described further with reference to the accompanying drawings below.
As shown in Figure 1, a kind of contraction sheet material, comprise polystyrene resin, high-impact polystyrene resin, it is characterized in that: described polystyrene resin is 99%, described high-impact polystyrene resin is 1%.
Shrink a manufacture method for sheet material, adopt following processing step to be prepared from:
(1) reinforced, the raw material that polystyrene resin and high-impact polystyrene resin form is added raw material feed bin, enters the little hopper above extruder by vavuum pump suction;
(2) metering and loading materials, by technological requirement, adjust the rotating speed of the blanking motor of little hopper, the blanking ratio of little hopper is made to reach polystyrene resin: high-impact polystyrene resin=99:1, the raw material added in setting ratio is first conducted oneself with dignity and is dropped into mixed-hopper, then flows to vertical screw, and raw material is in the vertical cavity of vertical screw, while stir, entered extruder by vertical screw force feed;
(3) melt extrude, the raw material mixed in proportion enters in extruder, after melting, exhaust, homogenizing, net filtration after filtration, enters Melt Pump, resin further homogenizing in Melt Pump of molten condition, then flow in T-shaped die head, at die lips place, extrude in the form of sheets;
(4) salivate, melt quenching on salivation roller of sheet, forms solid-state substrate;
(5) longitudinal stretching, substrate, in longitudinal stretching machine, through preheating, stretching, type-approval process, has carried out longitudinal stretching, and substrate is longitudinally being stretched 2-4 doubly, and its thickness reduces 2-4 doubly;
(6) local heat, the sheet material cross section thickness after longitudinal stretching is the distribution of ridge shape, that is: thin, the thick middle in both sides, and this causes turning over the immediate cause of sticking up; Draw exit to install two heaters additional vertical, heating-up temperature is 80 ~ 140 DEG C, each 200mm width in baking substrate both sides, and edge temperature adds tensility after improving; Improve two partially thin limits, the thickness on limit and interior thickness deviation are reduced;
(7) preheating, needs before cross directional stretch to carry out constant temperature preheating, will cause cold drawn when preheating is insufficient, and cold drawn is the main cause of distortion; Increase by one section of preheating device at horizontal mouth of drawing in, preheat temperature is 80 ~ 140 DEG C, provides the sufficient degree of preheating;
(8) cross directional stretch, under the traction that the substrate after longitudinal stretching presss from both sides at chain, enters transverse drawing mill, at cross directional stretch to original 3-5 doubly, reaches default width and thickness, form polystyrene sheet material;
(9) draw, polystyrene sheet material is sent to Traction Station and draws;
(10) trimming, cropped by the webbing of chain folder clamping by polystyrene sheet material, the polystyrene sheet material clout cropped carries out online rim charge pulverizing, and wind delivers to mixed-hopper, then enters metering and loading materials circulation and carries out repeating processing;
(11) on-line measurement thickness, carries out on-line continuous thickness measure by the polystyrene sheet material after trimming, and the thickness of measurement is shown to independently on terminal display, reference when adjusting for operator;
(12) semi-finished product rolling, the polystyrene sheet material rolling on winder measuring thickness is semi-finished product;
(13) cut and pack, semi-finished product polystyrene sheet material, on cutting machine, is cut by customer requirement, is recoiled as finished product, packaging, warehouse-in after inspection.
The biaxially oriented polystyrene sheet material using the method to produce, decreases the possibility of pressure break time die-cut; Owing to adding local heat, horizontally drawing front preheating, turn over after thermal contraction stick up, the ratio of twist angle reduces about 35%, can improve value-added content of product.
Claims (2)
1. shrink a sheet material, comprise polystyrene resin, high-impact polystyrene resin, it is characterized in that: described polystyrene resin is 99%, described high-impact polystyrene resin is 1%.
2. shrink a manufacture method for sheet material, it is characterized in that adopting following processing step to be prepared from by the raw material described in claim 1:
(1) reinforced, the raw material that polystyrene resin and high-impact polystyrene resin form is added raw material feed bin, enters the little hopper above extruder by vavuum pump suction;
(2) metering and loading materials, by technological requirement, adjust the rotating speed of the blanking motor of little hopper, the blanking ratio of little hopper is made to reach polystyrene resin: high-impact polystyrene resin=99:1, the raw material added in setting ratio is first conducted oneself with dignity and is dropped into mixed-hopper, then flows to vertical screw, and raw material is in the vertical cavity of vertical screw, while stir, entered extruder by vertical screw force feed;
(3) melt extrude, the raw material mixed in proportion enters in extruder, after melting, exhaust, homogenizing, net filtration after filtration, enters Melt Pump, resin further homogenizing in Melt Pump of molten condition, then flow in T-shaped die head, at die lips place, extrude in the form of sheets;
(4) salivate, melt quenching on salivation roller of sheet, forms solid-state substrate;
(5) longitudinal stretching, substrate, in longitudinal stretching machine, through preheating, stretching, type-approval process, has carried out longitudinal stretching, and substrate is longitudinally being stretched 2-4 doubly, and its thickness reduces 2-4 doubly;
(6) local heat, the sheet material cross section thickness after longitudinal stretching is the distribution of ridge shape, and draw exit to install two heaters additional vertical, heating-up temperature is 80 ~ 140 DEG C, each 200mm width in baking substrate both sides, and edge temperature adds tensility after improving;
(7) preheating, needs before cross directional stretch to carry out constant temperature preheating, and increase by one section of preheating device at horizontal mouth of drawing in, preheat temperature is 80 ~ 140 DEG C, provides the sufficient degree of preheating;
(8) cross directional stretch, under the traction that the substrate after longitudinal stretching presss from both sides at chain, enters transverse drawing mill, at cross directional stretch to original 3-5 doubly, reaches default width and thickness, form polystyrene sheet material;
(9) draw, polystyrene sheet material is sent to Traction Station and draws;
(10) trimming, cropped by the webbing of chain folder clamping by polystyrene sheet material, the polystyrene sheet material clout cropped carries out online rim charge pulverizing, and wind delivers to mixed-hopper, then enters metering and loading materials circulation and carries out repeating processing;
(11) on-line measurement thickness, carries out on-line continuous thickness measure by the polystyrene sheet material after trimming, and the thickness of measurement is shown to independently on terminal display, reference when adjusting for operator;
(12) semi-finished product rolling, the polystyrene sheet material rolling on winder measuring thickness is semi-finished product;
(13) cut and pack, semi-finished product polystyrene sheet material, on cutting machine, is cut by customer requirement, is recoiled as finished product, packaging, warehouse-in after inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510697336.2A CN105196578A (en) | 2015-10-23 | 2015-10-23 | Shrinkage sheet and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510697336.2A CN105196578A (en) | 2015-10-23 | 2015-10-23 | Shrinkage sheet and manufacturing method thereof |
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| CN105196578A true CN105196578A (en) | 2015-12-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030897A (en) * | 2012-12-14 | 2013-04-10 | 上海洛兴包装材料有限公司 | Anti-fog sheet and manufacturing method thereof |
| CN104004283A (en) * | 2014-06-10 | 2014-08-27 | 深圳永合高分子材料有限公司 | Environment-friendly two-way stretching polystyrene sheet material for printing and manufacture method thereof |
| CN104479156A (en) * | 2014-12-30 | 2015-04-01 | 桂林电器科学研究院有限公司 | Polyamide acid film with reinforced sides as well as preparation method and facility thereof |
| CN104497329A (en) * | 2014-12-30 | 2015-04-08 | 桂林电器科学研究院有限公司 | Side-thickened polyamic acid film, tape casting equipment and preparation method thereof |
| CN104558878A (en) * | 2014-12-26 | 2015-04-29 | 深圳永合高分子材料有限公司 | Polystyrene sheet capable of being uniformly contracted and applied to toy manufacturing, and manufacturing method of polystyrene sheet |
-
2015
- 2015-10-23 CN CN201510697336.2A patent/CN105196578A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030897A (en) * | 2012-12-14 | 2013-04-10 | 上海洛兴包装材料有限公司 | Anti-fog sheet and manufacturing method thereof |
| CN104004283A (en) * | 2014-06-10 | 2014-08-27 | 深圳永合高分子材料有限公司 | Environment-friendly two-way stretching polystyrene sheet material for printing and manufacture method thereof |
| CN104558878A (en) * | 2014-12-26 | 2015-04-29 | 深圳永合高分子材料有限公司 | Polystyrene sheet capable of being uniformly contracted and applied to toy manufacturing, and manufacturing method of polystyrene sheet |
| CN104479156A (en) * | 2014-12-30 | 2015-04-01 | 桂林电器科学研究院有限公司 | Polyamide acid film with reinforced sides as well as preparation method and facility thereof |
| CN104497329A (en) * | 2014-12-30 | 2015-04-08 | 桂林电器科学研究院有限公司 | Side-thickened polyamic acid film, tape casting equipment and preparation method thereof |
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