CN109897275A - High-strength abrasion-proof packaging film and preparation method thereof - Google Patents
High-strength abrasion-proof packaging film and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high-strength abrasion-proof packaging films and preparation method thereof, belong to thin film technique field.High-strength abrasion-proof packaging film of the invention, it is characterized in that, including the following component according to mass fraction meter: 40 ~ 60 parts of low density linear polyethylene resin, 40 ~ 60 parts of metallocene PE resin, 20 ~ 30 parts of acrylic resin, 10 ~ 15 parts of chitosan, 3 ~ 8 parts of urea, 4 ~ 6 parts of polyether-ether-ketone, 7 ~ 12 parts of filling master batch.Packaging film produced by the present invention has excellent tensile strength and breaking strength performance.
Description
Technical field
The invention belongs to thin film technique fields, and in particular to a kind of high-strength abrasion-proof packaging film and preparation method thereof.
Background technique
With the development of society, and in order to keep up with society developing steps, people are more and more busy, and work occupies
People's most of the time.With the increase of people's working time, diet and work and rest will eat three meals a day also more without rule
To take out fast food, even market is gone to buy fresh fruit, edible time cannot guarantee that.And take out the foods such as fast food and fruit
It is required to keep its fresh by outer packing and hygienic, and food package film is the most commonly used packing material, currently on the market often
The packaging film seen considers property instant packed and easy to disassemble, therefore lower to the intensity requirement of packaging film itself, still, there is portion
Packaging film is divided to need with high-intensity performance, such as: the packaging film of drinks, prepared food class packaging film.
Therefore, in order to reach the market demand, need to design a kind of packaging film with high-strength abrasion-proof.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of packaging films with high-strength abrasion-proof.
The present invention adopts the following technical scheme:
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 40
~60 parts, 40~60 parts of metallocene PE resin, 20~30 parts of acrylic resin, 10~15 parts of chitosan, 3~8 parts of urea,
4~6 parts of polyether-ether-ketone, 7~12 parts of filling master batch.
Further, the filling master batch includes the following component according to mass fraction meter: 10~20 parts of calcium carbonate, coupling
2~4 parts of agent, 1~4 part of lubricant, 1~4 part of dispersing agent.
Further, the coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, and the lubricant is
Erucyl amide, the dispersing agent are polyethylene wax.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, calcium carbonate powder is obtained；
S2, mixed once:
According to the mass fraction meter, by Paris white obtained by the coupling agent, the lubricant, the dispersing agent and S1
End is mixed evenly, and obtains the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, polypropylene
Resin and step 1 S2 gained mixture are mixed evenly, and obtain the second mixture；
Step 3: mixing three times:
According to the mass fraction meter, by the second mixture obtained by step 2, the chitosan, the urea and described poly-
Ether ether ketone is mixed evenly, and obtains third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, obtains high-strength abrasion-proof mixture；
Step 5: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 4 is subjected to extrusion molding, obtains high-strength abrasion-proof packaging
Film.
Further, when being sieved described in step 1, mesh screen is 400~550 mesh.
Further, revolving speed when being mixed described in step 1 S2 is 250~300r/min, and temperature is 40~50 DEG C；
Revolving speed when being mixed described in step 2 is 250~300r/min, and temperature is 40~50 DEG C；When being mixed described in step 3
Revolving speed be 250~300r/min, temperature be 40~50 DEG C.
Further, 3 temperature sections are shared in granulation process described in step 4, are respectively as follows: 80~85 DEG C of the first bringing-up section,
Second bringing-up section is 85~170 DEG C, and third bringing-up section is 170~220 DEG C.
Further, it when extrusion molding described in step 5, is handled by screw extruder, screw extruder shares four Duan Wen
Section is spent, is respectively as follows: 80~100 DEG C of the first temperature section, 100~170 DEG C of second temperature section, 170~190 DEG C of third temperature section, the
Four 190~220 DEG C of temperature sections.
Compared with the prior art, the present invention has the following beneficial effects:
The first, packaging film of the invention is with low density linear polyethylene resin and metallocene PE resin for main frame
Gel state is formed after structure and chitosan mixing, film-formation result can be improved.Meanwhile urea has very strong moisture absorption, cooperation
Polyether-ether-ketone with lubricating action, can effectively improve the qualification rate of packaging film production, and improve the pliability of packaging film；No
Only in this way, polyether-ether-ketone has high temperature resistance, the defect of polyvinyl resin can be effectively made up, the heat-resisting of packaging film is improved
Property, when with packaging film packaged food of the invention, then the freshness of food can be effectively ensured；
The second, applicant is by studying for a long period of time, using calcium carbonate as filling master batch, meanwhile, pass through coupling agent isopropyl three
(dioctylphyrophosphoric acid acyloxy) titanate esters are modified calcium carbonate, improve packaging film strength, and improve by lubricant
Its mobility, is effectively distributed in packaging film, therefore improves packaging film strength and wearability；Meanwhile applicant passes through length
Phase test discovery, after modified calcium carbonate, polyether-ether-ketone and urea are used in mixed way, can effectively improve packaging film strength.
Specific embodiment
Raw material used in the present invention is commercially available product.
Embodiment 1
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 40
Part, 40 parts of metallocene PE resin, 20 parts of acrylic resin, 10 parts of chitosan, 3 parts of urea, 4 parts of polyether-ether-ketone, filling is female
7 parts of material.
The filling master batch includes the following component according to mass fraction meter: 10 parts of calcium carbonate, 2 parts of coupling agent, and lubricant 1
Part, 1 part of dispersing agent.
The coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, and the lubricant is erucyl amide,
The dispersing agent is polyethylene wax.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, the mesh screen is 400~550 mesh, is obtained
Calcium carbonate powder；
S2, mixed once:
According to the mass fraction meter, by Paris white obtained by the coupling agent, the lubricant, the dispersing agent and S1
End is mixed evenly, and the revolving speed when mixing is 250r/min, and temperature is 40 DEG C to get the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, polypropylene
Mixture obtained by resin and step 1 S2 is mixed evenly, and the revolving speed when mixing is 250r/min, temperature 40
DEG C to get the second mixture；
Step 3: mixing three times:
According to the mass fraction meter, by obtained by the chitosan, the urea and the polyether-ether-ketone and step 2 the
Two mixtures are mixed evenly, and the revolving speed when mixing is 250r/min to get third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, shares 3 temperature in the granulation process
Section is spent, 80 DEG C of the first bringing-up section is respectively as follows:, the second bringing-up section is 85 DEG C, and third bringing-up section is 170 DEG C to get high-strength abrasion-proof
Mixture；
Step 5: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 4 is subjected to extrusion molding, at screw extruder
Reason, screw extruder shares four sections of temperature sections, is respectively as follows: 80 DEG C of the first temperature section, and 100 DEG C of second temperature section, third temperature section
170 DEG C, the 4th 190 DEG C of temperature section is to get high-strength abrasion-proof packaging film.
Embodiment 2
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 45
Part, 45 parts of metallocene PE resin, 23 parts of acrylic resin, 11 parts of chitosan, 4 parts of urea, 5 parts of polyether-ether-ketone, filling is female
8 parts of material.
The filling master batch includes the following component according to mass fraction meter: 12 parts of calcium carbonate, 3 parts of coupling agent, and lubricant 2
Part, 2 parts of dispersing agent.
The coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, and the lubricant is erucyl amide,
The dispersing agent is polyethylene wax.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, the mesh screen is 450 mesh, obtains carbonic acid
Calcium powder；
S2, mixed once:
According to the mass fraction meter, by Paris white obtained by the coupling agent, the lubricant, the dispersing agent and S1
End is mixed evenly, and the revolving speed when mixing is 260r/min, and temperature is 42 DEG C to get the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, polypropylene
Mixture obtained by resin and step 1 S2 is mixed evenly, and the revolving speed when mixing is 260r/min, temperature 42
DEG C to get the second mixture；
Step 3: mixing three times:
It, will be second obtained by the chitosan, the urea, the polyether-ether-ketone and step 2 according to the mass fraction meter
Mixture is mixed evenly, and the revolving speed when mixing is 260r/min, and temperature is 42 DEG C to get third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, shares 3 temperature in the granulation process
Section is spent, 82 DEG C of the first bringing-up section is respectively as follows:, the second bringing-up section is 90 DEG C, and third bringing-up section is 180 DEG C to get high-strength abrasion-proof
Mixture；
Step 5: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 4 is subjected to extrusion molding, at screw extruder
Reason, screw extruder shares four sections of temperature sections, is respectively as follows: 90 DEG C of the first temperature section, and 100~170 DEG C of second temperature section, third temperature
175 DEG C of section of degree, the 4th 200 DEG C of temperature section obtains high-strength abrasion-proof packaging film.
Embodiment 3
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 50
Part, 50 parts of metallocene PE resin, 230 parts of acrylic resin, 13 parts of chitosan, 5 parts of urea, 6 parts of polyether-ether-ketone, filling is female
10 parts of material.
The filling master batch includes the following component according to mass fraction meter: 18 parts of calcium carbonate, 3 parts of coupling agent, and lubricant 3
Part, 3 parts of dispersing agent.
The coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, and the lubricant is erucyl amide,
The dispersing agent is polyethylene wax.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, the mesh screen is 500 mesh, obtains carbonic acid
Calcium powder；
S2, mixed once:
According to the mass fraction meter, by Paris white obtained by the coupling agent, the lubricant, the dispersing agent and S1
End is mixed evenly, and the revolving speed when mixing is 280r/min, and temperature is 48 DEG C to get the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, polypropylene
Mixture obtained by resin and step 1 S2 is mixed evenly, and the revolving speed when mixing is 280r/min, temperature 48
DEG C to get the second mixture；
Step 3: mixing three times:
It, will be second obtained by the chitosan, the urea, the polyether-ether-ketone and step 2 according to the mass fraction meter
Mixture is mixed evenly, and revolving speed is 280r/min when the mixing, and temperature is 48 DEG C to get third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, shares 3 temperature in the granulation process
Section is spent, 84 DEG C of the first bringing-up section is respectively as follows:, the second bringing-up section is 160 DEG C, and third bringing-up section is 210 DEG C to get high-strength abrasion-proof
Mixture；
Step 5: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 4 is subjected to extrusion molding, at screw extruder
Reason, screw extruder shares four sections of temperature sections, is respectively as follows: 95 DEG C of the first temperature section, and 160 DEG C of second temperature section, third temperature section
185 DEG C, the 4th 210 DEG C of temperature section obtains high-strength abrasion-proof packaging film.
Embodiment 4
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 60
Part, 60 parts of metallocene PE resin, 30 parts of acrylic resin, 15 parts of chitosan, 8 parts of urea, 6 parts of polyether-ether-ketone, filling is female
12 parts of material.
The filling master batch includes the following component according to mass fraction meter: 20 parts of calcium carbonate, 4 parts of coupling agent, and lubricant 4
Part, 4 parts of dispersing agent.
The coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, and the lubricant is erucyl amide,
The dispersing agent is polyethylene wax.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, the mesh screen is 550 mesh, obtains carbonic acid
Calcium powder；
S2, mixed once:
According to the mass fraction meter, by Paris white obtained by the coupling agent, the lubricant, the dispersing agent and S1
End is mixed evenly, and the revolving speed when mixing is 300r/min, and temperature is 50 DEG C to get the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, polypropylene
Mixture obtained by resin and step 1 S2 is mixed evenly, and the revolving speed when mixing is 300r/min, temperature 50
DEG C to get the second mixture；
Step 3: mixing three times:
It, will be second obtained by the chitosan, the urea, the polyether-ether-ketone and step 2 according to the mass fraction meter
Mixture is mixed evenly, and the revolving speed when mixing is 300r/min to get third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, shares 3 temperature in the granulation process
Section is spent, 85 DEG C of the first bringing-up section is respectively as follows:, the second bringing-up section is 170 DEG C, and third bringing-up section is 220 DEG C to get high-strength abrasion-proof
Mixture；
Step 5: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 4 is subjected to extrusion molding, at screw extruder
Reason, screw extruder shares four sections of temperature sections, is respectively as follows: 100 DEG C of the first temperature section, and 170 DEG C of second temperature section, third temperature section
190 DEG C, the 4th 220 DEG C of temperature section obtains high-strength abrasion-proof packaging film.
Reference examples 1
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 60
Part, 60 parts of metallocene PE resin, 30 parts of acrylic resin, 15 parts of chitosan, 12 parts of filling master batch.
The filling master batch includes the following component according to mass fraction meter: 20 parts of calcium carbonate, 4 parts of coupling agent, and lubricant 4
Part, 4 parts of dispersing agent.
The coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, and the lubricant is erucyl amide,
The dispersing agent is polyethylene wax.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, the mesh screen is 550 mesh, obtains carbonic acid
Calcium powder；
S2, mixed once:
According to the mass fraction meter, by Paris white obtained by the coupling agent, the lubricant, the dispersing agent and S1
End is mixed evenly, and the revolving speed when mixing is 300r/min, and temperature is 50 DEG C to get the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, polypropylene
Mixture obtained by resin and step 1 S2 is mixed evenly, and the revolving speed when mixing is 300r/min, temperature 50
DEG C to get the second mixture；
Step 3: mixing three times:
According to the mass fraction meter, the second mixture obtained by step 2 and the chitosan are mixed evenly, institute
Stating revolving speed when mixing is 300r/min to get third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, shares 3 temperature in the granulation process
Section is spent, 85 DEG C of the first bringing-up section is respectively as follows:, the second bringing-up section is 170 DEG C, and third bringing-up section is 220 DEG C to get high-strength abrasion-proof
Mixture；
Step 5: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 4 is subjected to extrusion molding, at screw extruder
Reason, screw extruder shares four sections of temperature sections, is respectively as follows: 100 DEG C of the first temperature section, and 170 DEG C of second temperature section, third temperature section
190 DEG C, the 4th 220 DEG C of temperature section obtains high-strength abrasion-proof packaging film.
Reference examples 2
High-strength abrasion-proof packaging film, including the following component according to mass fraction meter: low density linear polyethylene resin 60
Part, 60 parts of metallocene PE resin, 30 parts of acrylic resin, 15 parts of chitosan, 8 parts of urea, 6 parts of polyether-ether-ketone, calcium carbonate.
The preparation method of the packaging film of the high-strength abrasion-proof, includes the following steps:
Step 1: mixed once:
According to the mass fraction meter, by the calcium carbonate, the low density linear polyethylene resin, metallocene PE
Resin and acrylic resin are mixed evenly, and the revolving speed when mixing is 300r/min, and temperature is 50 DEG C to get the
One mixture；
Step 2: secondary mixing:
It, will be first obtained by the chitosan, the urea, the polyether-ether-ketone and step 1 according to the mass fraction meter
Mixture is mixed evenly, and the revolving speed when mixing is 300r/min to get the second mixture；
Step 3: being granulated:
By pelletizer, the second mixture obtained by step 2 is subjected to extrusion granulation, shares 3 temperature in the granulation process
Section is spent, 85 DEG C of the first bringing-up section is respectively as follows:, the second bringing-up section is 170 DEG C, and third bringing-up section is 220 DEG C to get high-strength abrasion-proof
Mixture；
Step 4: extrusion molding:
By screw extruder, high-intensitive mixture obtained by step 3 is subjected to extrusion molding, at screw extruder
Reason, screw extruder shares four sections of temperature sections, is respectively as follows: 100 DEG C of the first temperature section, and 170 DEG C of second temperature section, third temperature section
190 DEG C, the 4th 220 DEG C of temperature section obtains high-strength abrasion-proof packaging film.
By Examples 1 to 4 and to the resulting packaging film of reference examples 1~2 carry out performance detection, packaging film with a thickness of
0.05mm, testing result such as the following table 1:
Wherein:
According to GB/T 13519-2016 be packed for polytene thermal-shrinkable film measurement tensile strength, elongation at break and
Angle tear strength；
Coefficient of friction is measured according to QB/T 1125-2000 " non-stretched polyethylene, polypropylene film ".
Table 1: the testing result of Examples 1 to 4 and the resulting packaging film of reference examples 1~2
As can be known from Table 1, packaging film made from Examples 1 to 4, tensile strength reach longitudinal 30Mpa, lateral 27Mpa,
Elongation at break reaches longitudinal 225Mpa, lateral 415Mpa, and angle tear strength reaches 61kN/m, and packs made from reference examples
Film its tensile strength, breaking strength and angle tear strength are weaker than packaging film made from Examples 1 to 4.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (8)
1. high-strength abrasion-proof packaging film, which is characterized in that including the following component according to mass fraction meter: the linear poly- second of low-density
40 ~ 60 parts of olefine resin, 40 ~ 60 parts of metallocene PE resin, 20 ~ 30 parts of acrylic resin, 10 ~ 15 parts of chitosan, urea 3 ~ 8
Part, 4 ~ 6 parts of polyether-ether-ketone, 7 ~ 12 parts of filling master batch.
2. high-strength abrasion-proof packaging film according to claim 1, which is characterized in that the filling master batch includes according to quality
The following component of number meter: 10 ~ 20 parts of calcium carbonate, 2 ~ 4 parts of coupling agent, 1 ~ 4 part of lubricant, 1 ~ 4 part of dispersing agent.
3. according to high-strength abrasion-proof packaging film according to claim 2, which is characterized in that the coupling agent is isopropyl three
(dioctylphyrophosphoric acid acyloxy) titanate esters, the lubricant are erucyl amide, and the dispersing agent is polyethylene wax.
4. the preparation method of the packaging film of high-strength abrasion-proof as claimed in claim 2, which comprises the steps of:
Step 1: the preparation of filling master batch:
S1, grinding:
According to the mass fraction meter, calcium carbonate is ground and is sieved, calcium carbonate powder is obtained；
S2, mixed once:
According to the mass fraction meter, calcium carbonate powder obtained by the coupling agent, the lubricant, the dispersing agent and S1 is mixed
Conjunction stirs evenly, and obtains the first mixture；
Step 2: secondary mixing:
According to the mass fraction meter, by the low density linear polyethylene resin, metallocene PE resin, acrylic resin
With mixture obtained by step 1 S2, be mixed evenly, obtain the second mixture；
Step 3: mixing three times:
According to the mass fraction meter, obtained by the chitosan, the urea and the polyether-ether-ketone and step 2 second is mixed
It closes material to be mixed evenly, obtains third mixture；
Step 4: being granulated:
By pelletizer, third mixture obtained by step 3 is subjected to extrusion granulation, obtains high-strength abrasion-proof mixture；
Step 5: extrusion molding:
High-intensitive mixture obtained by step 4 is subjected to extrusion molding, obtains high-strength abrasion-proof packaging film.
5. the preparation method of the packaging film of high-strength abrasion-proof according to claim 4, which is characterized in that mistake described in step 1
When sieve, mesh screen is 400 ~ 550 mesh.
6. the preparation method of the packaging film of high-strength abrasion-proof according to claim 4, which is characterized in that described in step 1 S2
Revolving speed when mixing is 250 ~ 300r/min, and temperature is 40 ~ 50 DEG C；Described in step 2 be mixed when revolving speed be 250 ~
300r/min, temperature are 40 ~ 50 DEG C；Revolving speed when being mixed described in step 3 is 250 ~ 300r/min, and temperature is 40 ~ 50
℃。
7. the preparation method of the packaging film of high-strength abrasion-proof according to claim 4, which is characterized in that made described in step 4
3 temperature sections are shared during grain, are respectively as follows: 80 ~ 85 DEG C of the first bringing-up section, the second bringing-up section is 85 ~ 170 DEG C, third heating
Section is 170 ~ 220 DEG C.
8. the preparation method of the packaging film of high-strength abrasion-proof according to claim 4, which is characterized in that squeezed described in step 5
It when forming out, is handled by screw extruder, screw extruder shares four sections of temperature sections, is respectively as follows: the first temperature section 80 ~ 100
DEG C, 100 ~ 170 DEG C of second temperature section, 170 ~ 190 DEG C of third temperature section, the 4th 190 ~ 220 DEG C of temperature section.
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Cited By (1)
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Application publication date: 20190618 |