Description

Watch the video below to learn more about the recommended natural 250g unprint zipperlock Kraft paper bag with front window.

Introduce

This amazing standup doypack is made of recyclable kraft paper film materials. Kraft paper is a natural, biodegradable, and compostable material which is intended for more sustainable packaging solutions for the dry nuts products. Kraft paper can be recycled up to seven times before becoming totally degraded. Therefore this standup doypacks are relatively cheap to make.

Here we are going give a further explaination on this amazing eco-friendly paper package, and hope it helps you to decide your perfect packaging.

Laminated Foil Materials

This foil materials is a reinforced structure with excellent properties for spices powder packages. The foil structure is MatteBOPP18/KraftPaper67/LDPE, with graphic as below.

Matte BOPP18, is short for matte finish biaxially orientated polypropylene film with most common thickness 18 microns (equals to 0.72 gauge). Compared to glossy BOPP film, it is able to achieve the final package with a fine matte visual appearance for the package at a lower cost.

Brown kraft paper in nature color with weight 70gsm working as the outside layer, good stiffness and supportive layer. Custom artwork can also be printed on outside.

LDPE film, means low density polyethylene film, which is the most used inner sealing layer for the coffee bag. It is able to provide enough sealing strength and airtight property for the final packages.

The final thickness for this foil laminate should be 140 microns, with tolerance +-5%. and the toughness of this foil will be enough to finalize good package profile for 250 grams of dry nuts products.

Kraft Paper Standup Doypack With Front Window Properties

1 Great print quality

The artwork is achieved in gravure printing which can print up to maximum 10 colors. With advanced print art and print defects inspection system, we are now outputting fantastic print effect against the customers’ artwork.

Actually, this amazing artwork is reversely printed on the inner side of Matte BOPP film and then laminated to kraft paper, which can keep the original colors of the customer artwork in vivid effect.

When the artwork is directly printed onto kraft paper, actually, some of the subtle and complicated effect may not be presented as the effect of printing onto substrate film, like BOPP film, BOPA film, and polyester PET film. As the porous tiny holes on the fiber plant will of course absorb much of the inks, and will cause the loss of gloss and vivid effect in human eyesight.

Read more here to understand the print effect of the artwork printed on kraft paper.

2 Great Standing Profile

In this doypack, we choose kraft paper with yield 70 gsm, which is a stiff and tough materials for most packages. The final packages achieved with this foil laminate MatteBOPP18/KraftPaper67/LDPE are usually with great standup straight effect. So, when the products are filled into this standup doypack, the package will be able to present good branding and sale purpose on the goods shelf.

3 Excellent Airtight Property for Zipperlock

This single track plastic zipper is applied onto the kraft paper doypack, with back and front part well melted to the inner layer of the doypack.  It enables the package to be repeatedly opened and closed with great airtight property.

Here, we are going to open and close the zipperlock for several times, and check if the air is easy to penetrate into or out of the package. Usually, we will apply a certain pressure on this closed zipper doypack, and check if the inflated doypack is easy to burst.

You are advised to have a further understanding on this test progress through the video below.

4 High Mechanical Strength

This reinforced laminated foil is achieved with great mechanical strength, with some standard items as below.

• Tensile Strength
• Sealing Strength
• Anti-puncture Strength
• Burst Impact Strength
• Anti-pressure Property

The above tests are performed against each order, upon customer requirements, and you may check the exact values of this foil material in the Technical Date Sheet part of this post.

In our daily QC work, there is an more easy and reliable method to check if the bag strength is enough to meet the various conditions in the operations of filling, transport, loading and unloading, distribution. We perform drop test against each order, of course, the standard for this drop test should be decided against customer needs.

Here, we are going to fill 1000grams of coffee beans into this kraft paper foil pouch, and perform drops for 5 times, and check if there is any breakage for the package.

You are advised to watch the video below.

You can judge from the video, the package stays well after 5 drops, really great physical strength.

5  Have Front Window

Usually, the contents are painted on the bag, but having a front window gives the customer a more direct view of what’s inside the bag. This will make the customer look more intuitive, more easily attract customers.And you could make some other about the products description and pictures.

6 Barrier Performance

With mocon O2/H2O/CO2 permeation tester equiped in our laboratory, we are able to keep a more close eye on the barrier performance of each laminate foil produced in our manfuacturing plant.

Against this foil laminate MatteBOPP18/Kraft Paper70gsm/LDPE, actually, it is not high barrier performance, which can not protect the dry nuts products in a good state for long time.

Item	Standard	Unit	Value
WVTR	ASTM E 96	g/m2/24hr	3.87
OTR	ASTM D 372-99	cc/m2/24hr	1414.11

To ensure great protection of the dry nuts from oxygen, moisture, usually a layer of metallized polyester film or aluminum foil sheet is applied in the foil structure, with some common foil structure as below.

1. Kraft Paper/VMPET/LDPE
2. MatteBOPP/Kraft Paper/VMPET/LDPE
3. Kraft Paper/ALU/LDPE
4. MatteBOPP/Kraft Paper/ALU/LDPE
5. Kraft Paper/ALU/PET/LDPE

This foil materials proves to be working well for dry nuts and snacks proudcts distritubed around the country.

Package Dimension and Filled Level

 

Artwork Printing

A good creative artwork matters much more than most people expect, as most people tend to buy a product they feel good for.

For the printing produce in our plant, we are able to achieve the artwork in maximum 10 colors. With in-line print defect inspection system, more than 98% of the common print defects can be removed, you may have a further understanding by below video.

We will have to request a minimum order quantity of 500kgs per design against customer artwork. As to print each color, there will be a tank of printing inks offered to the rolling print cylinder.

If the customer just start up their business, and he would like to initiat his business at the lowest cost, he may try clear unprinted film, and plan a logo printing when the business goes bigger.

250grams Kraft Paper Standup Doypack Dieline

 

The artwork design template should be helpful when you plan to print your logo and eye-catching artwork on this coffee bag, and you may just download it and send it to your design to fill the creative artwork. You are advised to feedback to us with Illustrator or PDF file with high quality (>= 300PPI)

Technical Data Sheet of 250 grams Dry Nuts Kraft Paper Standup Doypack

this is the technical data sheet with our laboratory tests on the finished foil for dry nuts  , the values are reliable and ensure it running well on your machine.

TL-39 Technical Data Sheet of 250g unprint zipperlock Kraft paper bag with front window

Some main items are listed as below.

1. Dimension Tolerance
2. Print Appearance
3. Yield (grams per square meter)
4. Tensile Strength (Mpa)
5. Elongation Rate  (%)
6. Coefficient of friction, short as COF
7. Solvents Left (mg/m2 )
8. Sealing Strength (N/15mm)
9. Sealing Conditions
10. Bond Strength (N/15mm)
11. Burst Impact Strength (J)
12. Anti-Puncture ability (N)
13. Drop Test Ablity (cm)
14. Anti-pressure ability (kgs)
15. Water Vapor Transmission Rate (g/m2/24hr)
16. Oxygen Transmission Rate (cc/m2/24hr)

You are welcome to reach us if you have any questions regarding the test or you need further test against any items.

More Sustainable Options

With increasing burden on the plastic pollution, more and more products are now seeking for packages which are more sustainable, like compostable packages, recyclable mono materials packages, plant-based materials packages. They all proves to be more eco-friendly than the traditional multilayer packages which are even very difficult to be recycled.

1) Home compostable film material packages

Thanks to the fast development of plant-based film materials, now we are able to present the multi-layer standup pouch and roll foils in full home compostable options.

The compostable substrate films are as below.

1. BOPLA Film
2. PLA+PBAT Film
3. Kraft Paper
4. Metallized Paper
5. Cellulose Paper
6. Metallized Cellulose Paper
7. PBS Film

Based on the compostable substrate film, we are developing kinds of multi-functional packages for various applications, as below

1. High barrier performance packages, for roasted coffee beans, nutritions, milk powder, snacks or biscuits.
2. Alkaline resistant packages for hand wash, laundry cleaning chemicals etc
3. Frozen packages, like fish, noodles, or soup products
4. Vacuum packages for vegetables, rice, red beans etc
5. Hot filling packages for juice
6. Microwave packages

Along with the extentions of compostable film materials, more and more products are now starting to get well packed in home compostable packages, with some well-applied foil structures as below.

Biodegradable Foil Laminate	WVTR (g/m2/24hr)	OTR (cc/m2/24hr)
BOPLA40/PLA+PBAT60	62.2	267
Cellulose30/PLA+PBAT60	131.5	5.6
Kraft Paper45g /PLA+PBAT60	44	742
Kraft Paper45g/BOPLA40	41	380
Metallized Paper69g/PLA+PBAT40	27	127
Cellulose30/Metallized Cellulose20/PLA+PBAT60	23	0.16
Cellulose30/Metallized Cellulose20/BOPLA40	25	0.12
Metallized Paper 69g/Cellulose30/PLA+PBAT60	5.6	1.12
Kraft45g/Metallized Cellulose20/PLA+PBAT60	26	0.22
Cellulose30/Kraft45g/PLA+PBAT60	19	117.2
Cellulose30/Metallized Paper69g/PLA+PBAT60	8.9	1.1

You may have a further understanding on the biodegradable home compostable materials and pouches here.

2) Mono Materials Recyclable Pouch Packages

Mono meterials pouch packages are truly recyclabled, as they can be easily processed into plastic granules which can be used again for other applications. However, for the traditional multilayer laminates, take PET/LDPE for example, it is difficult to be processed, as PET and LDPE are quite different material, and can not be melted under the same conditions. That’s why momo materials pouch packages are becoming so widely popular in the packaging field, and highly reputed in the consumer market.

At present, mono materials pouch are basically divided into Polyethylene channel and Polypropylene channel, with polyethylene channel much more popular, as they can be converted into kinds of standup pouch packages with relative high performance.

Here we list the film materials that can be well intended for mono-materials recyclable pouch packages.

1. MDOPE Film
2. BOPE Film
3. APE Film
4. LDPE Film
5. LLDPE Film
6. CPE Film
7. ABOPP Film
8. CPP Film
9. VMCPP Film
10. VMBOPP Film

Various foil laminates can be achieved based on above film materials with different properties, which is intended to meet the particular requirements for specific product. Some foil laminates are well-known as below.

1. MDOPE/APE
2. MDOPE/LDPE
3. MDOPE/EVOH-LDPE
4. MDOPE/HDPE/APE
5. MDOPE/BOPE/APE
6. BOPE/APE

Upon our experience, mono materials pouch can be well intended for spices powder products.

You may have a further understanding on the recyclable mono materials and pouches here.

How to fill dry nuts into premade standup doypack

This is a durable and high speed automatic filling machinery especially developed for dry nuts products that can achieve the standup doypack from 2g to 1000g. Upon our experience, if the customer would like to get a durable machinery for their long-term business, this would be a fine choice.

Here is the below for the working of this amazing machinery.

About the manufacturer

Qingdao Tongli Packaging Products Co., Ltd is a professional and reliable flexible converter and package print service supplier located in Qingdao, China more than 10 years, with competitive engagement in household cleaning chemicals, coffee packages, spout doypack package, dry nuts packages, pet food packages and human food applications.

We are now working with our customers in a long-term partnership around the world. You may just rely on us if you would like to get sustainable and reliable supply for your expect packages.