NZ616735B2 - Film containing alginate membrane layer and method for preparing same - Google Patents
Film containing alginate membrane layer and method for preparing same Download PDFInfo
- Publication number
- NZ616735B2 NZ616735B2 NZ616735A NZ61673512A NZ616735B2 NZ 616735 B2 NZ616735 B2 NZ 616735B2 NZ 616735 A NZ616735 A NZ 616735A NZ 61673512 A NZ61673512 A NZ 61673512A NZ 616735 B2 NZ616735 B2 NZ 616735B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- alginate
- solution
- membrane
- film
- film carrier
- Prior art date
Links
- 235000010443 alginic acid Nutrition 0.000 title claims abstract description 209
- 229920000615 alginic acid Polymers 0.000 title claims abstract description 209
- 229940072056 alginate Drugs 0.000 title claims abstract description 207
- 239000012528 membrane Substances 0.000 title claims abstract description 138
- 239000000969 carrier Substances 0.000 claims abstract description 116
- 150000003839 salts Chemical class 0.000 claims abstract description 70
- 239000011780 sodium chloride Substances 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 150000002500 ions Chemical class 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 239000000017 hydrogel Substances 0.000 claims abstract description 38
- 238000004132 cross linking Methods 0.000 claims abstract description 37
- MSXHSNHNTORCAW-UHFFFAOYSA-M sodium 3,4,5,6-tetrahydroxyoxane-2-carboxylate Chemical compound [Na+].OC1OC(C([O-])=O)C(O)C(O)C1O MSXHSNHNTORCAW-UHFFFAOYSA-M 0.000 claims abstract description 37
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 37
- 239000000661 sodium alginate Substances 0.000 claims abstract description 37
- 229940005550 Sodium alginate Drugs 0.000 claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- MZYRDLHIWXQJCQ-YZOKENDUSA-L Potassium alginate Chemical compound [K+].[K+].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O MZYRDLHIWXQJCQ-YZOKENDUSA-L 0.000 claims abstract description 24
- 235000010408 potassium alginate Nutrition 0.000 claims abstract description 24
- 239000000737 potassium alginate Substances 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims abstract description 21
- 239000002250 absorbent Substances 0.000 claims abstract description 20
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 16
- 239000004745 nonwoven fabric Substances 0.000 claims description 15
- 229920001155 polypropylene Polymers 0.000 claims description 13
- MKJXYGKVIBWPFZ-UHFFFAOYSA-L Calcium lactate Chemical compound [Ca+2].CC(O)C([O-])=O.CC(O)C([O-])=O MKJXYGKVIBWPFZ-UHFFFAOYSA-L 0.000 claims description 10
- 239000001527 calcium lactate Substances 0.000 claims description 10
- 229960002401 calcium lactate Drugs 0.000 claims description 10
- 235000011086 calcium lactate Nutrition 0.000 claims description 10
- 239000002537 cosmetic Substances 0.000 claims description 10
- 229960005069 Calcium Drugs 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 229920002994 synthetic fiber Polymers 0.000 claims description 8
- 239000012209 synthetic fiber Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004626 polylactic acid Substances 0.000 claims description 5
- 229960003563 Calcium Carbonate Drugs 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 4
- 229940079593 drugs Drugs 0.000 claims description 4
- 235000015097 nutrients Nutrition 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000004753 textile Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 108010020346 Polyglutamic Acid Proteins 0.000 claims description 3
- 210000002268 Wool Anatomy 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 229920002643 polyglutamic acid Polymers 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 229960002713 calcium chloride Drugs 0.000 claims description 2
- 239000000686 essence Substances 0.000 claims description 2
- 229960004494 Calcium Gluconate Drugs 0.000 claims 3
- NEEHYRZPVYRGPP-IYEMJOQQSA-L Calcium gluconate Chemical compound [Ca+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O NEEHYRZPVYRGPP-IYEMJOQQSA-L 0.000 claims 3
- 239000004227 calcium gluconate Substances 0.000 claims 3
- 235000013927 calcium gluconate Nutrition 0.000 claims 3
- 229940035295 Ting Drugs 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 11
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 39
- 239000004744 fabric Substances 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- XJKJWTWGDGIQRH-BFIDDRIFSA-N Alginic acid Chemical compound O1[C@@H](C(O)=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C(O)=O)O[C@@H](C)[C@@H](O)[C@H]1O XJKJWTWGDGIQRH-BFIDDRIFSA-N 0.000 description 2
- SXVBHNXTPNLOKR-FCLWLKJISA-L Calcium alginate Chemical compound [Ca+2].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O SXVBHNXTPNLOKR-FCLWLKJISA-L 0.000 description 2
- 229960001126 alginic acid Drugs 0.000 description 2
- 239000000783 alginic acid Substances 0.000 description 2
- 230000000975 bioactive Effects 0.000 description 2
- 235000010410 calcium alginate Nutrition 0.000 description 2
- 239000000648 calcium alginate Substances 0.000 description 2
- 229960002681 calcium alginate Drugs 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- 230000001815 facial Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 229940095672 Calcium Sulfate Drugs 0.000 description 1
- 229940029983 VITAMINS Drugs 0.000 description 1
- 229940021016 Vitamin IV solution additives Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229920005690 natural copolymer Polymers 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229930003231 vitamins Natural products 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/30—Cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0006—Organic membrane manufacture by chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/13—Alginic acid or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/06—Processes in which the treating agent is dispersed in a gas, e.g. aerosols
Abstract
Disclosed is a film containing an alginate membrane layer comprising a film carrier that absorbs liquid and at least one alginate membrane, the alginate membrane being formed by cross-linking between an alginate such as sodium or potassium alginate and a salt water solution comprising a divalent metal ion such as calcium ions. Also disclosed is a manufacturing method of a film containing an alginate membrane, the film comprises a liquid-absorbent film carrier and alginate membrane, the alginate membrane is a hydrogel membrane having a network structure formed by cross linking, the hydrogel membrane with a network structure is formed on and infiltrated into the surface of the film carrier so as to make the alginate membrane unseparated from the film carrier, the manufacturing method of the alginate membrane comprises the steps of: providing an alginate solution containing a percentage of sodium alginate or potassium alginate by weight and a salt water solution containing a percentage of divalent metal ions by weight; providing a length of the liquid-absorbent film carrier; performing a first coating by soaking to coat a layer of the alginate solution on a surface of the film carrier; then performing a second coating by spray coating to coat a layer of the salt water solution over the layer of the alginate solution; and forming an alginate membrane that is a hydrogel membrane having a network structure, formed on and infiltrated into the surface of the film carrier by crosslinking the alginate in the alginate solution with the divalent metal ions in the salt water; wherein the percentage of sodium alginate or potassium alginate in the alginate solution by weight ranges from 1 % to 5% by weight; and wherein the percentage of the divalent metal ions by weight ranges from 1 % to 10% by weight. al ion such as calcium ions. Also disclosed is a manufacturing method of a film containing an alginate membrane, the film comprises a liquid-absorbent film carrier and alginate membrane, the alginate membrane is a hydrogel membrane having a network structure formed by cross linking, the hydrogel membrane with a network structure is formed on and infiltrated into the surface of the film carrier so as to make the alginate membrane unseparated from the film carrier, the manufacturing method of the alginate membrane comprises the steps of: providing an alginate solution containing a percentage of sodium alginate or potassium alginate by weight and a salt water solution containing a percentage of divalent metal ions by weight; providing a length of the liquid-absorbent film carrier; performing a first coating by soaking to coat a layer of the alginate solution on a surface of the film carrier; then performing a second coating by spray coating to coat a layer of the salt water solution over the layer of the alginate solution; and forming an alginate membrane that is a hydrogel membrane having a network structure, formed on and infiltrated into the surface of the film carrier by crosslinking the alginate in the alginate solution with the divalent metal ions in the salt water; wherein the percentage of sodium alginate or potassium alginate in the alginate solution by weight ranges from 1 % to 5% by weight; and wherein the percentage of the divalent metal ions by weight ranges from 1 % to 10% by weight.
Description
FILM CONTAINING ALGINATE MEMBRANE AND
MANUFACTURING METHOD OF THE SAME
OUND OF THE INVENTION
The t invention s to a film containing at least
one alginate membrane and a manufacturing method of the
same. The film includes a film carrier and an alginate
membrane. The film carrier absorbs liquid. At least a layer of
[0 alginate solution and a layer of slat water solution containing
divalent metal ions are coated on a surface of the film r
by two separate and continuous processes. Then crosslinking
occurs between the two solutions on the surface of the film
carrier to produce the film containing an alginate membrane.
Alginic acid is a natural copolymer, easily reacted with metal ions
from salts to form s kinds of alginate for commercial uses. The
water-soluble sodium alginate reacts with double charged calcium
ion (Ca2+) from salts so as to form insoluble calcium alginate gel.
Alginate products for commercial use include sodium alginate,
potassium alginate, um alginate, etc, being applied to wound
dressings or facial masks. There are l methods for making
alginate gels ble now, including:
(1) dialysis sion method: this is the most commonly
used method. The alginate solution is gelled by diffusion of calcium
ions from an outer reservoir.
(2) in situ gelling: a calcium salt with limited solubility is mixed
with a sodium alginate solution and then a slowly acting acid is added
into the mixture. Due to the acid, the calcium ions are released to
IO cross-link the alginate molecules so as to form calcium te gel.
(3) cooling method: at high temperature, calcium ions are
unable to bond with alginic acid. Thus dissolve sodium alginate and
calcium salts in hot solution. Then allow the solution to set and form gel
by cooling.
(4) crosslinking method: the hydrogen groups contained in
alginate molecules are cross-linked by epichlorohydrin (ECH) so as to
form gel insoluble in solution.
Now the alginate or r materials have been applied to
wound dressings or facial masks, as the alginate revealed in US
6,080,420, US 6,258,995, US 6,203,845, US 6,201,164, US
6,372,248, US 6,326,524, US 5,144,016, US 5,230,853, US
,622,666, US 5,660,857, US 957, GB 9419572, GB
9501514, GB 9516930, PCT/ GB 9502284 (WO96/10106)
PCT/ GB 9601719 (WO97/03710) PCT/ GB 9701098
(WO97/3978l) PCT/ DK 9700292
, (W098/ 02196) ,
/072817, TW 95218502, TW201100119A1, TW
1265814, etc. r, most of these prior arts focus on
components of the materials or percent by weight of the
IO components. The problems occur or practical requirements
during manufacturing of the alginate membrane have not been
ned, especially how to mass e the alginate
membrane or how to reduce manufacturing cost of the alginate
membrane.
Thus there is a need to provide a film containing an
alginate membrane and a manufacturing method of the same
related to water—soluble sodium alginate or potassium alginate
for ing the performance and applications of the film.
The manufacturers in this industry have more options.
SUMMARY OF THE INVENTION
The present invention relates to a film containing at least
one alginate membrane and a manufacturing method of the
same. The film includes a film carrier and at least one alginate
membrane. The film r can be non-woven fabric
(non-woven cloth), textile, a porous sponge film, or a plastic
film. The film r is made from synthetic fibers, natural
fibers, one kind of high molecular polymers or their
ations. The synthetic fibers include hylene
terephthalate (PET), nylon, acrylics, polypropylene (PP), poly lactic acid
(PLA), etc. The natural fibers include cotton, linen, wool, silk, etc. The
te membrane is a hydrogel complex membrane having a
network structure, formed by following steps: provide an
alginate solution containing a certain weight of sodium
alginate or potassium alginate (in weight t, wt%) and a
salt water solution containing a certain weight of divalent
metal ions such as calcium ions. The salt can be calcium lactate,
calcium chloride, calcium ate, poly-glutamic acid calcium,
calcium carbonate, calcium sulfate, etc. Then at least one surface of the
73603‘3_l (GHMmeu) PQSOSINZ RDAULTON
film carrier is coated with a layer of the te solution and a layer of
the salt water solution by at least two separate and continuous processes.
There is no restriction on the order of the g solution. Then
crosslinking occurs between alginate and the divalent metal ions in the
salt water solution, on the surface of the film carrier or infiltrating into the
film carrier to form a hydrogel x membrane having a network
structure. Thus a film containing an alginate membrane is mass-produced
continuously and quickly. Therefore, the tion cost is reduced due
to mass-production of the alginate membrane.
The present invention also relates to a film containing at
least one alginate membrane and a manufacturing method of
the same. When the surface of the film carrier (such as
ven fabric ), textile porous sponge film, etc.) is a
rough surface, the alginate membrane formed is connected to
the film carrier tightly, not separated easily. When the surface
of the film carrier (such as plastic film) is a smooth surface,
the alginate membrane formed is able to be separated from the
film carrier and used for following processes.
73609‘3_| (GI-Mums) P9503LNZ RDAULTON
The present invention also relates to a film containing at
least one alginate membrane and a manufacturing method of
the same. After the crosslinking reaction being completed, one
or two es of the film carrier is/are spray-coated
continuously with a layer of alginate solution and a layer of
salt water solution in sequence. Thus the thickness of the
alginate membrane formed is easy to be increased and
controlled by at least one further crosslinking reaction.
In one aspect, the present invention provides film
comprising:
a liquid—absorbent film carrier, and
an alginate membrane;
the alginate membrane being a hydrogel membrane
having a network ure formed by crosslinking, the
hydrogel membrane with a network structure is formed on and
rated into the surface ofthe film carrier so as to make the
te membrane unseparated from the film r;
wherein the cturing method ofthe alginate
T3609‘3_l (GHMIReII) WWJIANZ ROAULTON
membrane comprises the steps of:
providing an alginate solution containing a percentage
of sodium alginate or potassium alginate by weight and a salt
water on ning a percentage of divalent metal ions
by weight;
ing a length ofthe -absorbent film carrier;
performing a coating by soaking to coat a layer of the
alginate solution on a surface of the film carrier;
performing a coating by spray coating to coat a layer of
the salt water solution over the layer ofthe alginate solution;
crosslinking the te in the alginate solution with
the nt metal ions in the salt water solution so as to
produce an alginate membrane that is a hydrogel membrane
having a network structure, formed on and infiltrated into the
surface of the film carrier;
wherein the percentage of sodium alginate or potassium
alginate in the alginate solution by weight ranges from 1% to
% by weight; and
wherein the percentage of the divalent metal ions by
weight ranges from 1% to 10% by weight.
736093) (GHMafleri) 995031 ,NZ RDAUU'ON
In another , the present invention provides a film
comprising:
a liquid-absorbent film carrier, and
an alginate membrane;
the te ne being a hydrogel ne having a
network structure formed by inking, the hydrogel
membrane with a network structure is only formed on the
surface of the film carrier so as to make the alginate membrane
separated from the film carrier;
wherein the manufacturing method of the alginate
membrane comprises the steps of:
providing an alginate solution containing a percentage of
sodium alginate or potassium alginate by weight and a salt
water solution containing a percentage of divalent metal ions
by weight;
providing a length ofthe liquid-absorbent film carrier;
performing a coating by soaking to coat a layer of the salt
water solution on a surface of the film carrier;
ming a coating by spray coating to coat a layer of the
alginate solution over the layer of the salt water solution;
NEOBIJJ (GHMIHHIJ P95031,NZ RDAULTON
crosslinking the alginate in the alginate solution with the
ntinetalions in the saltivater solution so as to produce
an alginate nunnbrane thatis a hydrogelinernbrane having a
network structure, formed only on the surface of the film
carrier;
\vherehlthe percentage of sodhnn alghune or potasshnn
alginate in the te solution by weight ranges from 1% to
% by weight; and
\Nhereinthe percentage ofthe ntrnetalions byxweight
rangesfron1196to 1096by'weight
In another aspecL the present invenfion provides
nianufacturing rnethod of a ern containing an alginate
Inernbrane,the nnprmes a “quid-absorbent filnlcarfier
and alginate membrane, the alginate membrane is a hydrogel
membrane having a network ure formed by crosslinking,
the hydrogel membrane with a k structure is formed on
and infiltrated into the surface ofthe film carrier so as to make
the alginate ntenibrane thiseparated frorn the fUrn carrien the
manufacturing method of the alginate membrane comprises the
steps of:
7360943_l (GHMaflerl)P95031,NZ RDAULTON
providing an te solution containing a percentage of
sodium alginate or potassium alginate by weight and a salt
water solution containing a percentage of divalent metal ions
by weight;
providing a length ofthe liquid-absorbent film carrier;
performing a first g by soaking to coat a layer of the
te on on a surface of the film carrier;
then performing a second coating by spray coating to coat a
layer of the salt water solution over the layer of the alginate
on; and
forming an alginate membrane that is a hydrogel membrane
having a network structure, formed on and infiltrated into the
surface of the film carrier by crosslinking the alginate in the
alginate solution with the divalent metal ions in the salt water;
wherein the percentage of sodium alginate or potassium
alginate in the alginate solution by weight ranges from 1 °wb to
% by ; and
wherein the percentage of the divalent metal ions by weight
ranges from 1 % to 10% by weight.
In another aspect, the present invention provides a
73605¢3_1 (GHMamm P9503I.NZ ROAULYON
manufacturing method of a film containing an alginate
membrane, the film comprises a liquid—absorbent film carrier
and alginate membrane, the alginate ne is a hydrogel
membrane having a network structure formed by crosslinking,
the hydrogel membrane with a k structure is only formed
on the e of the film carrier so as to make the alginate
membrane separated from the film r; the manufacturing
method ofthe alginate membrane comprises the steps of:
providing an alginate solution containing a percentage of
sodium alginate or potassium alginate by weight and a salt
water solution containing a percentage of divalent metal ions
by weight;
providing a length of the liquid-absorbent film carrier;
performing a first coating by soaking to coat a layer of the
salt water solution on a surface ofthe film carrier;
then performing a second coating by spray coating to coat a
layer of the alginate solution over the layer of the salt water
on; and
forming an alginate membrane that is a hydrogel ne
having a k structure, formed only on the surface ofthe
7360943_l tGHMlfiels) P95031NZ RDAULTON
film r by crosslinking the alginate in the alginate
solution with the divalent metal ions in the salt water solution;
wherein the percentage of sodium alginate or potassium
alginate in the alginate solution by weight ranges from 1 % to
% by ; and
wherein the percentage ofthe nt metal ions by weight
ranges from 1 % to 10% by weight.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a schematic drawing showing a cross section of an embodiment
having an alginate membrane disposed on a surface of a film carrier
according to the present invention;
Fig. 2 is a schematic drawing showing a cross section of an embodiment
having an alginate membrane disposed on a surface of a film carrier
ing to the present invention;
Fig. 3 is a schematic drawing showing arrangement of coating
equipments during manufacturing processes ofthe present invention;
Fig. 4 is a flow chart showing manufacturing processes of a film
containing alginate membrane according to the present invention;
Fig. 5 is a flow chart showing manufacturing ses of an embodiment
of a film containing alginate ne according to the present
invention;
Fig. 6 is a flow chart showing cturing processes of another
embodiment of a film containing alginate membrane according to the
present invention.
DETAILED DESCRIPTION OF THE PREFFERED EMBODIMENT
Refer to Fig. l and Fig. 2, a film 1 containing at least one
IS alginate membrane ing to the t invention includes
a film carrier 10, and at least one te membrane 20.The
film carrier 10 is a carrier that absorbs liquid. The film carrier
can be a plastic film with a smooth surface or a thin layer
with a rough surface such as non-woven fabric (cloth), fabric
or porous sponge. Moreover, the film carrier 10 is made from
synthetic fibers, natural , one kind of high molecular
polymers or combinations of at least two kinds of high
molecular polymers. The tic fibers include but not
limited to polyethylene terephthalate (PET), nylon, acrylics,
polypropylene (PP), poly lactic acid (PLA), etc. The natural fibers include
but not limited to cotton, linen, wool, silk, etc. A surface 11 of the film
carrier 10 can be a rough surface or a smooth e according to users’
needs or applications.
lO The alginate membrane 20 is a hydrogel complex membrane
having a network structure. Refer to Fig. 3, the alginate
ne 20 is produced by following steps:
providing an alginate solution 21 containing a certain
weight t (wt%) of sodium alginate or potassium alginate
[5 and a salt water solution 22 containing a certain weight percent
(wt%) of divalent metal ions such as calcium ions;
coating a layer of the alginate solution 21 and a layer of
the salt water on 22 evenly on at least one surface 11 ofa
film carrier 10 by two separate processes carried out
successively;
crosslink alginate in the alginate solution 21 with divalent
metal ions in the salt water solution 22 on the surface 11 of the
film carrier 10 so as to form a hydrogel complex membrane (20)
with a network structure on the surface 11 ofthe film carrier 10
(as shown in Fig. 1), or filtrating into the e 11 ofthe film
carrier 10 (as shown in Fig. 2). As shown in Fig. l and Fig. 2,
the alginate ne 20 is formed by alginate (represented by
solid lines) crosslinked with divalent metal ions sented by
dotted lines) to have a crosslinked network structure.
In the present invention, the surface 20 of the film carrier
is used to load the te solution 2] and the salt water
solution 22 so that an alginate membrane 20 such as a calcium
alginate membrane is mass-produced on the surface 11 of the
IS film carrier 10 fast and uously. Therefore, the
manufacturing cost is reduced due to mass-production of the
alginate membrane.
Refer to Fig. 3 and Fig. 4, a manufacturing method of the
film 1 containing at least one alginate membrane of the present
invention includes following steps:
(a) providing a film carrier 10 that absorbs liquid, an
alginate solution 21 containing a certain percent of sodium
te or potassium alginate by weight (wt%) and a salt water
solution 22 containing a certain t of divalent metal ions
such as calcium ions by weight(wt%);
(b) using at least two separate and successive ses to
coat a layer of the alginate solution 21 and a layer of the salt
water solution 22 respectively on at least one e 11 of the
l0 film r 10;
(c) crosslinking the alginate in the alginate solution 21
with the divalent metal ions in the salt water solution 22 on the
surface 11 of the film carrier 10 so as to form a hydrogel
complex membrane 20 having a network structure, formed on
IS the surface 11 of the film carrier 10, as show in Fig. 1 or
filtrating into the surface 1], as shown in Fig. 2.
In the above step (b), the order of coating the alginate
solution 21 or the salt water solution 22 on the surface 11 of
the film carrier 10 on at least one surface 11 ofthe film carrier
is not limited.
Refer to Fig. 5, in the step (b), firstly at least one surface
11 of the film carrier 10 is coated with a layer of the te
solution 21. Then a layer ofthe salt water solution 22 is coated
over the layer of the alginate solution 21. While crosslinking
the alginate in the alginate solution 21 with the divalent metal
ions in the salt water solution 22 on the surface 11 of the film
carrier 10, the divalent metal ions in the salt water solution 22
IO generally infiltrate further into an inner surface of the surface
11 for inking of the te. Thus a hydrogel complex
membrane 20 with a network structure shown in Fig. 2 is
formed above or in the surface 11 of the film carrier 10. In the
Fig. 2, the alginate ne 20 is infiltrated into an
infiltration interface 12. The position of the infiltration
interface 12 in the surface layer 11 ofthe film carrier 10 is not
limited, depending on the relative concentration of the alginate
solution 21 and the salt water solution 22. In this embodiment,
the alginate membrane 20 is not separated from the film carrier
10 easily.
Refer Fig. 6, in the step (b), at least one surface 11 of the film
carrier 10 is coated with a layer ofthe salt water solution 22
and then a layer of an alginate solution 21 is coated over the
layer ofthe salt water solution 22. While crosslinking the
alginate in the alginate on 21 with the divalent metal ions
in the salt water solution 22 on the surface 11 of the film
carrier 10, the alginate in the alginate solution 21 is firstly
crosslinked over the surface 11 ofthe film carrier 10 to form a
hydrogel complex membrane (20) with larger density. Thus the
infiltration interface 12 is overlapped with the surface 11, not
rating into the inner surface ofthe surface 11, to crosslink
with the divalent metal ions. The hydrogel complex membrane
(20) having a k ure is only formed on the upper
surface 11 ofthe film carrier 10, as shown in Fig. 1. The
hydrogel complex membrane (20) is the alginate membrane 20
formed on the upper surface 11 ofthe film carrier 10 in Fig. 1.
In this embodiment, the te membrane 20 is easy to be
separated from the film carrier 10.
Moreover, for convenience of arrangement of coating
equipments and coating processes, in the step (b), the first
coating is performed by g the film carrier 10 into the
solution while the second coating is run by spray coating. Take
the equipment arrangement and coating procedures shown in
Fig. 3 as an example. A roller of film r 10 absorbing
liquid and having certain length is transported and soaked into
a tank filled with an alginate solution 21 by a conveyor. This is
the soaking process A shown in the Fig. 3. In this embodiment,
the alginate solution 21 is produced by a certain amount of
sodium te dissolved in water. The weight percent of the
sodium alginate in solution ranges from 0.01 to 20 wt% while
1-5 wt% is preferred. In this embodiment, an upper and a lower
surfaces (11) of the film carrier 10 are evenly coated with a
IS layer of sodium alginate solution (21). Then the conveyor
sends the film carrier 10 already soaked with the sodium
alginate solution to be coated with a layer of salt water solution
22 containing a certain weight percent of nt metal ions
by a spray coating s B. In this embodiment, the salt
water on 22 contains divalent calcium ions. The weight
percent of the divalent metal ions in the salt water solution
ranges from 0.01 to 50 wt% while l-lO wt% is preferred. The
salt water solution 22 is coated over the layer of sodium
alginate solution on the surface 11 of the film carrier 10 by
spray coating. The salt water solution 22 ning divalent
metal ions may further infiltrate into the film carrier 10 and
react with the sodium alginate solution in the film r 10
for crosslinking, as shown in Fig.2.
IO Furthermore, according to the requirement of the thickness
of the alginate membrane 20, a ity sets of spray g
process C is designed. Each set of spray coating process C
includes at least one spray coating of the alginate solution 21
Cl and at least one spray coating of the slat water solution C2.
After the completion of the spray coating process B, perform
the spray coating processes of the alginate solution 21 and the
salt water solution in sequence on one surface or two surfaces
of the film r 10 until the alginate membrane 20 is having
the thickness required.
The ure and formation ofthe film 1 containing at least
one alginate membrane 20 ofthe present invention are ed in details
by ing embodiments.
< Embodiment 1>
A film carrier 10 is non-woven fabric or cloth made from
polypropylene (PP) and is used to absorb 4 wt% calcium lactate that is
used as the salt water solution 22. Then 2 wt% sodium te
solution used as the alginate solution 21 and having the
IO thickness of 1.1mm is coated over the film carrier 10 with the
calcium e. After crosslinking, a layer of the alginate
membrane 20 with the thickness of about 1mm is formed on the
PP non-woven . The alginate membrane 20 is a hydrogel complex
membrane having a network structure. Moreover, when the PP
non-woven fabric contacts the salt water solution 22 and the alginate
solution 21 by a rough surface ofthe PP non-woven fabric, the alginate
membrane 20 formed is connected with the non-woven fabric (the
film carrier 10). When the PP non-woven fabric contacts the salt water
solution 22 and the alginate solution 21 by a smooth surface of the PP
non-woven fabric, the alginate membrane 20 formed is separated
from the non-woven fabric (the film carrier 10).
< Embodiment 2 >
A film r 10 is non-woven fabric or cloth made from
polypropylene (PP) and nylon and having the ess of 0.42mm. The
film carrier 10 absorbing liquid is soaked into 2wt% sodium alginate
solution continuously. After removing extra solution, coat 4
wt% calcium lactate solution on an upper and lower surfaces
(11) of the non-woven fabric (the film carrier 10) by spray
IO coating so as to produce a film 1 containing an alginate
membrane 20 and having the thickness of about 0.72mm
continuously. This ess of the film 1 includes the
thickness of the fabric. If user wants to produce thicker
te membrane 20, after the calcium lactate reacting with
IS the sodium alginate, continuously coat one surface or two
surfaces ofthe film 1 produced with a layer of sodium alginate
solution and a layer of calcium lactate solution for crosslinking
of alginate. Repeat the above procedures until the thickness of
the film 1 es the required thickness.
< Embodiment 3 >
A film r 10 is non-woven fabric or cloth made from
opylene (PP) and nylon and having the thickness of 0.42mm. The
film carrier 10 absorbing liquid is soaked into 4wt% calcium e
solution uously. After removing extra solution, coat 2
wt% sodium alginate solution on an upper and lower surfaces
(11) of the non-woven fabric (the film carrier 10) by spray
coating so as to produce a film 1 containing an alginate
membrane 20 and having the thickness of about 0.72mm
continuously. This thickness of the film 1 includes the
IO thickness of the fabric. If user wants to produce thicker
alginate membrane 20, after the sodium alginate reacting with
the calcium lactate, continuously coat one e or two
surfaces of the film 1 with a layer of calcium lactate solution
and a layer of sodium alginate solution for crosslinking of
alginate. Repeat the above procedures until the thickness ofthe
film 1 achieves the required thickness.
In addition, while producing the film containing alginate
membrane ofthe present ion, the alginate solution 21 can
be added with other materials (additives) such as bioactive
components in cosmetics or pigments, vitamins, growth s,
peptides, proteins, minerals, etc. The bioactive ents
include nutrients in cosmetics, essences in cosmetics, and drug
solutions in cosmetics. The pigments are animal/plant extracts.
Compared with the technique available now, a film
containing at least one alginate membrane and a manufacturing
method of the same have following ages:
(1) The film can be produced continuously and quickly.
This cial to mass-production of the alginate membrane
and the manufacturing cost is reduced.
(2) The film can be produced by general coating
equipments so that the cost of production ents can be
reduced.
IS (3) After the first crosslinking reaction being completed,
at least one surface of the film carrier is spray—coated
continuously with a layer of alginate solution and a layer of
salt water solution in sequence. Thus a further crosslinking
reaction occurs on the surface ofthe film r. The thickness
ofthe alginate membrane is easy to be increased and controlled
by at least one further crosslinking reaction. Therefore the
performance and applications of the alginate membrane are
improved.
Additional advantages and modifications will readily occur to those
skilled in the art. Therefore, the invention in its broader aspects is not
limited to the specific details, and representative devices shown and
bed herein. Accordingly, various modifications may be made
without ing from the spirit or scope of the general inventive
t as defined by the appended claims and their equivalents.
Claims (23)
1. A film comprising: a liquid-absorbent film carrier, and an alginate ne; the alginate membrane being a hydrogel membrane having a network structure formed by crosslinking, the hydrogel ne with a network structure is formed on and infiltrated into the surface of the film r so as to make the alginate membrane unseparated from the film 10 wherein the manufacturing method of the alginate membrane comprises the steps of: providing an alginate solution containing a percentage of sodium alginate or potassium alginate by weight and a salt water solution containing a percentage of divalent metal ions by weight; 15 providing a length ofthe liquid-absorbent film carrier; performing a g by soaking to coat a layer ofthe alginate solution on a surface of the film carrier; performing a coating by spray coating to coat a layer of the salt water solution over the layer of the alginate solution; 20 crosslinking the alginate in the alginate solution with the divalent metal ions in the salt water on so as to produce an alginate membrane that is a hydrogel membrane having a network structure, on and ated into the surface of the film carrier; wherein the percentage ofsodium te or potassium te in the 25 alginate solution by weight ranges from 1% to 5% by weight; and wherein the percentage of the divalent metal ions by weight ranges from 1% to 10% by weight.
2. The film as claimed in claim 1, wherein the film carrier is non-woven fabric, e, a porous sponge film, or a plastic film.
3. The film as claimed in claim 1, n the film carrier is made from synthetic fibers, natural fibers, polymers or their combinations.
4. The film as claimed in claim 3, wherein the synthetic fibers include polyethylene terephthalate (PET), nylon, acrylics, polypropylene (PP), and poly lactic acid (PLA).
5. The film as claimed in claim 1, wherein the salt water solution containing a certain percent of the divalent metal ions by weight includes calcium lactate solution, calcium de solution, calcium gluconate solution, poly-glutamic acid calcium solution, calcium carbonate solution, and calcium sulfate solution.
6. The film as claimed in claim 1, wherein the alginate solution is added with additives selected from the group consisting of nutrients for use in cosmetics, essences for use in cosmetics, and drug solutions for use in cosmetics or pigments.
7. A film comprising: a liquid-absorbent film carrier, and an alginate membrane; the alginate membrane being a el membrane having a network structure formed by crosslinking, the hydrogel ne with a network structure is only formed on the surface of the film carrier so as to make the alginate ne separated from the film carrier; wherein the manufacturing method of the alginate ne comprises the steps of: ing an alginate solution containing a percentage of sodium alginate or potassium alginate by weight and a salt water solution containing a percentage of divalent metal ions by weight; providing a length of the liquid—absorbent film carrier; performing a coating by soaking to coat a layer of the salt water solution on a surface of the film carrier; performing a coating by spray coating to coat a layer of the alginate solution over the layer ofthe salt water solution; 10 crosslinking the alginate in the alginate solution with the divalent metal ions in the salt water solution so as to produce an alginate membrane that is a hydrogel membrane having a network structure, formed only on the surface of the film carrier; 15 wherein the percentage of sodium alginate or potassium alginate in the alginate solution by weight ranges from 1% to 5% by ; and n the percentage of the divalent metal ions by weight ranges from 1% to 10% by weight. 20
8. The film as claimed in claim 7, wherein the film carrier is non-woven , textile, a porous sponge film, or a plastic film.
9. The film as claimed in claim 7, wherein the film r is made from tic fibers, natural fibers, polymers or their 25 combinations.
10. The film as claimed in claim 9, wherein the synthetic fibers include polyethylene terephthalate (PET), nylon, acrylics, polypropylene (PP), and poly lactic acid (PLA).
11. The film as claimed in claim 7, n the salt water solution containing a certain percent of the divalent metal ions by weight es calcium lactate solution, calcium chloride solution, calcium gluconate solution, lutamic 'Jt acid calcium solution, calcium carbonate solution, and calcium sulfate solution.
12. The film as claimed in claim 7, wherein the alginate solution is added with ves selected from the group ting of nutrients for use in cosmetics, es for use to in cosmetics, and drug solutions for use in cosmetics or pigments.
13. A manufacturing method of a film containing an te membrane, the film comprises a liquid-absorbent film carrier and alginate membrane, the alginate membrane is a hydrogel membrane I5 having a network structure formed by crosslinking, the hydrogel membrane with a network structure is formed on and infiltrated into the surface of the film carrier so as to make the alginate membrane rated from the film carrier, the manufacturing method of the alginate membrane comprises the steps of: 20 providing an alginate solution containing a percentage of sodium alginate or potassium alginate by weight and a salt water solution containing a percentage of divalent metal ions by weight; providing a length of the liquid-absorbent film carrier; 25 performing a first coating by soaking to coat a layer ofthe alginate solution on a surface ofthe film carrier; then performing a second coating by spray coating to coat a layer of the salt water on over the layer of the te solution; and forming an alginate ne that is a hydrogel membrane having a k structure, formed on and infiltrated into the surface of the film r by crosslinking the alginate in the alginate solution with the divalent metal ions in the salt water; wherein the percentage of sodium alginate or potassium alginate in the alginate solution by weight ranges from 1 % to 5% by weight; and wherein the percentage of the divalent metal ions by weight ranges from 1 % to 10% by weight.
14. The method as claimed in claim 13, wherein the film carrier IO is non-woven fabric, textile, a porous sponge film, or a plastic film.
15. The method as claimed in claim 13, wherein the film r is made from synthetic fibers, natural fibers, polymers or their combinations. 15
16. The method as claimed in claim 13, wherein the synthetic fibers include polyethylene terephthalate (PET), nylon, acrylics, polypropylene (PP), and poly lactic acid (PLA).
17. The method as claimed in claim 13, wherein the natural fibers e cotton, linen, wool, and silk. 20
18. The method as claimed in claim 13, wherein the salt water solution containing a certain percent of the divalent metal ions by weight includes calcium lactate solution, m chloride solution, calcium gluconate solution, poly-glutamic acid m solution, calcium carbonate solution, and calcium e 25 solution.
19. The method as d in claim 13, wherein the alginate membrane is integrated with the film carrier when the surface ofthe film carrier is a rough surface.
20. The method as claimed in claim 13, wherein alginate membrane is separated from the film carrier when the surface ofthe film carrier is a smooth surface.
21. The method as claimed in claim 13, n the 5 crosslinking in the step (c) being ted, the method further includes a step of performing a spray coating process of the alginate solution and a spray coating process of the salt water solution in order on the surface of the alginate membrane for crosslinking and increasing thickness of the 10 te membrane.
22. The method as claimed in claim 13, wherein additives are included in the alginate solution, the additives selected from the group consisting of nutrients, drug ons and pigments. 15
23. A manufacturing method of a film containing an alginate membrane, the film comprises a liquid-absorbent film carrier and alginate membrane, the alginate membrane is a hydrogel membrane having a network structure formed by crosslinking, the hydrogel membrane with a network 20 structure is only formed on the surface of the film carrier so as to make the alginate membrane separated from the film carrier; the cturing method of the alginate membrane comprises the steps of: providing an alginate solution containing a tage of 25 sodium alginate or potassium alginate by weight and a salt water solution containing a percentage of divalent metal ions by weight; providing a length ofthe -absorbent film carrier; ming a first coating by soaking to coat a layer ofthe salt water solution on a surface of the film r; then performing a second coating by spray coating to coat a layer of the alginate on over the layer of the salt water solution; and forming an alginate membrane that is a hydrogel membrane having a network structure, formed only on the surface ofthe film carrier by crosslinking the alginate in the alginate solution with the nt metal ions in the salt water 10 solution: wherein the percentage of sodium alginate or potassium alginate in the alginate solution by weight ranges from 1
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110120855.4A CN102774063B (en) | 2011-05-11 | 2011-05-11 | Film containing alginate membrane layer and manufacture method thereof |
| CN201110120855.4 | 2011-05-11 | ||
| PCT/CN2012/000350 WO2012152054A1 (en) | 2011-05-11 | 2012-03-20 | Film containing alginate membrane layer and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ616735A NZ616735A (en) | 2016-02-26 |
| NZ616735B2 true NZ616735B2 (en) | 2016-05-27 |
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