China made 42.5 50kg Ad Star block bottom cement bags

Short Description:

PP valve bags weigh less than traditional paper bags, which reduces freight costs
PP valve bags consume less space and will fit more unfilled bags on a truck, which increases storage space in warehouse

PP valve bags coated or laminated are resistant to moisture

Free samples available
Accept trial order under MOQ

Product Detail

Product Tags


Block Bottom Valve Bag

Valve bag is a new and advanced type in packing industry. It commonly used on automated packing lines where filling efficiency is essential and the speed of filling and closing open mouth bags can be accommodated.

Widely used in cement, flour, food ingredients, medicine ingredients, chemical materials, plastic resin, animal feeds… powdery and granular material.

As a professional manufacturer of the Block Bottom Valve packaging bag, we make our bags:

1. In 100% virgin raw material

2. Eco-friendly ink with good fastness and bright colors.

3. Top grade machine to make sure a strong break-resistance, peel-resistence, stable hot air welding bag, make sure the upmost protect of your materials.

4. From tape extruding to fabric weaving, to laminating and printing, to the final bag making, we have strict inspection and testing to make sure a high quality and durable bag for end users.
bag factory inspection
good print on bag
good lamination on bag


Products Name Custom wholesale 25kg 40kg 50kg empty PP woven cement packaging bag
Materials 100% virgin new polypropylene PP PE granules
Size 50*62*12cm or other options
Valve size 15cm or other options
Woven Fabric 10 X 10mesh , customized color
Inner Bag Kraft paper , PE plastic
UV Content 0%-3%
Ventilation Property 30nm3/h-170nm3/h

As customer’s filling machines and stuff products

Net Weight 25kg, 40kg, 50kg
Bag Weight 50g/pc-150g/pc
Testing drop test, breaking strength,


As customized , offset printing , flexible printing, laminated OPP gravure printing
Equipments Austria AD*star-kon+ , eight sets totally
Technology Hot air welding
Top Vale spout, self-closed mouth
Bottom Square (block ), self welded
 Surface diamond shape embossing, anti-skidding, easy to stow and transport.  Andvery artistic.
Usage /application Flowing powder , cement , fertilizer , chemicals , flour , monosodium glutamate, putty , try adhesive…all kinds of free-flowing goods.
Packing 500pcs per bale ; 5000pcs per wooden pallet ; 4500pcs per cases ; 6000pcs per double planks
Production time Normally 25-30 days for the first container, then one container per week. Can negotiable in case any urgent delivery requirement.
Features Moisture proof , automatic filling , self-closed mouth

According to our customers specific requirements, we can make bags in multi-function, bags in tubular shape or with back seam, bags in off set print, gravure print, in external valve or internal valve, bag valve fabric can be in woven fabric or customized such like non-woven fabric, In order to easy find the filling spout, we can make a different color of the valve fabric to make it more visible for workers.

The air permission can be customized according to the filling stuffs, and the speed of the filling machine.

For some materials has higher requirement of the mosture-proof, we can combine the pp woven fabric together with the kraft paper and make a two layers bag.

There is no question is too small, no task is too big, all the demands we will taken seriously and find the best solution for you.


1. Factory produce, factory export.
2. Engaged in this industry since 1983, more than 39 years of experience
3. Top grade equipment, foreign equipment has been introduced since 2009 to ensure higher quality and reduce the overall cost for customers.
4. Occupied a total 160,000m2 of production area and can make sure an annual output more than 500Million bags.
5. Professional design team, well cooperated cylinder workshop, with the sufficient experience by handling more than 6,000 kinds of bags, to meet the unique needs of customers
6. Good reputation, we aim at long and stable relationship with our valuable customers.

7. Professional Services
*pre-sale service
Any of your questions will be taken seriously and offer you the reference opinions.
* In-sale service
Make you posted of the production progress with on-site follow up for each production step.
* After-sales service
We are responsible for every bag we exported. Feel free to contact us in case any questions you may have. We will work and solve your problems timely.
AD STAR block bottom bags


Here are several automatic packaging scenarios, cement packing, fertilizer packing, chemical powder packing… Filling spout and valve size can be customized based on your filling machine. And in case you would like to change the kraft paper cement bag to the pp woven fabric cement bag, you do not have to worry about the size of the filling mouth, because according to most customer feedback, plastic woven bags are suitable for the current main types of kraft paper bag filling machine. While, the pp woven fabric is stronger than paper, quick to fill and has a more competitive price; All qualities that have contributed to the sharp increase in the use of this packaging type.

block bottom cement bags

Disclaimer: The intellectual property shown on the listed product(s) belongs to third parties. These products are only offered as examples of our production capabilities, and not for sale.

  • Previous:
  • Next:

  • Write your message here and send it to us
    +86 13833123611